211 results on '"J. Gagnon"'
Search Results
2. Social determinants of health and disparities in pediatric trauma care: protocol for a systematic review and meta-analysis
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Janyce Eunice Gnanvi, Natalie Yanchar, Gabrielle Freire, Emilie Beaulieu, Pier-Alexandre Tardif, Mélanie Bérubé, Alison Macpherson, Ian Pike, Roger Zemek, Isabelle J. Gagnon, Sasha Carsen, Belinda Gabbe, Soualio Gnanou, Cécile Duval, and Lynne Moore
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Disparities ,Inequities ,Social determinants of health ,PROGRESS-plus ,Pediatrics ,Injury care ,Medicine - Abstract
Abstract Background Social determinants of health (SDH), including “the conditions in which individuals are born, grow, work, live and age” affect child health and well-being. Several studies have synthesized evidence about the influence of SDH on childhood injury risks and outcomes. However, there is no systematic evidence about the impact of SDH on accessing care and quality of care once a child has suffered an injury. We aim to evaluate the extent to which access to care and quality of care after injury are affected by children and adolescents’ SDH. Methods Using Cochrane methodology, we will conduct a systematic review including observational and experimental studies evaluating the association between social/material elements contributing to health disparities, using the PROGRESS-Plus framework: place of residence, race/ethnicity/culture/language, occupation, gender/sex, religion, education, socioeconomic status, and social capital and care received by children and adolescents (≤ 19 years of age) after injury. We will consult published literature using PubMed, EMBASE, CINAHL, PsycINFO, Web of Science, and Academic Search Premier and grey literature using Google Scholar from their inception to a maximum of 6 months prior to submission for publication. Two reviewers will independently perform study selection, data extraction, and risk of bias assessment for included studies. The risk of bias will be assessed using the ROBINS-E and ROB-2 tools respectively for observational and experimental study designs. We will analyze data to perform narrative syntheses, and if enough studies are identified, we will conduct a meta-analysis using random effects models. Discussion This systematic review will provide a synthesis of evidence on the association between SDH and pediatric trauma care (access to care and quality of care) that clinicians and policymakers can use to better tailor care systems and promote equitable access and quality of care for all children. We will share our findings through clinical rounds, conferences, and publication in a peer-reviewed journal. Systematic review registration PROSPERO CRD42023408467
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- 2024
- Full Text
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3. Alcohol use disorders among Myanmar migrant workers in Thailand
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Anita J. Gagnon, Predrag Bajcevic, Deivi Gaitan, and Valerie Daw Tin Shwe
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Health (social science) ,Sociology and Political Science ,business.industry ,Migrant workers ,030227 psychiatry ,03 medical and health sciences ,0302 clinical medicine ,Intervention (counseling) ,Environmental health ,Medicine ,Health education ,030212 general & internal medicine ,business ,Law - Abstract
Purpose The purpose of this paper is to determine the prevalence of Alcohol Use Disorders (AUDs) among Myanmar male migrant workers (> 15 years) living in Mae Sot, Thailand, and their patterns of drinking. Design/methodology/approach A cross-sectional survey was administered to 512 participants to measure AUDs and drinking patterns. ANOVA and χ2 analyses were performed to assess demographic differences between abstainers, harmful and hazardous drinkers (HHDs) (those showing signs of AUDs) and non-harmful drinkers. Findings Results showed that 12.3 percent of male Myanmar migrants were HHDs, a rate only slightly higher than in Thai men (9.1 percent), but much higher than in men still living in Myanmar (2.7 percent) (WHO, 2014). Also, 19 percent of alcohol-consuming Myanmar male migrant workers reported patterns of heavy episodic drinking, which is markedly higher than in alcohol-consuming Thai (4.7 percent) and Myanmar men (1.5 percent) (WHO, 2014). Originality/value Given the health risks associated with AUDs and heavy episodic drinking, the findings of this study suggest a need for appropriate alcohol-related health education and intervention for Myanmar male migrant workers.
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- 2019
4. Refugee mothers, migration pathways and HIV: a population-based cohort study
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Joel G. Ray, Rahim Moineddin, Douglas M Campbell, Susitha Wanigaratne, Jennifer Blake, Mark H. Yudin, Meb Rashid, Yogendra Shakya, Anita J. Gagnon, Donald C. Cole, and Marcelo L. Urquia
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Adult ,Health (social science) ,Adolescent ,Social Psychology ,Refugee ,Population ,Human immunodeficiency virus (HIV) ,Emigrants and Immigrants ,Mothers ,HIV Infections ,medicine.disease_cause ,Cohort Studies ,03 medical and health sciences ,Population based cohort ,0302 clinical medicine ,Prevalence ,Humans ,Medicine ,030212 general & internal medicine ,Social determinants of health ,education ,Ontario ,Refugees ,education.field_of_study ,030505 public health ,business.industry ,Public Health, Environmental and Occupational Health ,Middle Aged ,Increased risk ,Female ,Extended time ,0305 other medical science ,business ,Cohort study ,Demography - Abstract
Forced migration and extended time spent migrating may lead to prolonged marginalization and increased risk of HIV. We conducted a population-based cohort study to examine whether secondary migration status, where secondary migrants resided in a transition country prior to arrival in Ontario, Canada and primary migrants arrived directly from their country of birth, modified the relationship between refugee status and HIV. Unadjusted and adjusted prevalence ratios (APR) and 95% confidence intervals (CI) were estimated using log-binomial regression. In sensitivity analysis, refugees with secondary migration were matched to the other three groups on country of birth, age and year of arrival (+/- 5 years) and analyzed using conditional logistic regression. Unmatched and matched models were adjusted for age and education. HIV prevalence among secondary and primary refugees and non-refugees was 1.47% (24/1629), 0.82% (112/13,640), 0.06% (7/11,571) and 0.04% (49/114,935), respectively. Secondary migration was a significant effect modifier (
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- 2019
5. Security amidst stigma: Exploring HIV and sexual minority stressors through an attachment-based psychotherapy group
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Belinda Carrasco, Aaron S. Breslow, Christina Mastropaolo, and Gregory J. Gagnon
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050103 clinical psychology ,Psychotherapist ,Social stigma ,medicine.medical_treatment ,education ,Social Stigma ,Psychological intervention ,050109 social psychology ,HIV Infections ,Group psychotherapy ,Sexual and Gender Minorities ,Acquired immunodeficiency syndrome (AIDS) ,Transgender ,medicine ,Attachment theory ,Humans ,0501 psychology and cognitive sciences ,05 social sciences ,medicine.disease ,Minority stress ,Object Attachment ,Sexual minority ,Psychiatry and Mental health ,Clinical Psychology ,Psychotherapy, Group ,Psychology ,Stress, Psychological - Abstract
Despite strides in HIV prevention and lesbian, gay, bisexual, and transgender care, comprehensive care centers are of critical importance for lesbian, gay, bisexual, and transgender communities and people with HIV/AIDS who continue to contend with intersecting stigmas and chronic minority stressors. Building on the integrated attachment and sexual minority stress model, we discuss these themes by highlighting a group vignette from an urban psychiatric clinic that has provided affirmative psychotherapy to marginalized communities affected by HIV/AIDS for over 2 decades. The authors have rotated at the clinic as cofacilitators of a weekly, process-oriented group for sexual minority men who are HIV positive or are affected by HIV. In this article, we provide a theoretical foundation for HIV-affirming group psychotherapy and clinical integration of minority stress and attachment-based interventions. Group psychotherapy provides a rare opportunity to bond an often-isolated community by evoking factors of universality, cohesiveness, and catharsis. It simultaneously enables us to confront individual existential concerns with serostatus disclosure, grief, and feelings of victimization, as well as challenge internalized stigma and rejection sensitivity. We apply these issues to a verbatim clinical exchange, analyzing attachment-related themes and issues pertaining to minority stress and stigma, as well as discuss group mechanisms for attachment interventions. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
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- 2019
6. Controlled-Atmosphere Storage of Pork Under Carbon Dioxide
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G. Doyon, Rick Holley, Pascal Delaquis, J. Gagnon, N. Rodrigue, and C. Gariépy
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Controlled atmosphere ,chemistry.chemical_element ,Mineralogy ,Bacterial growth ,Loin ,medicine.disease_cause ,Shelf life ,Microbiology ,Nitrogen ,chemistry.chemical_compound ,chemistry ,Psychrotrophic bacteria ,Modified atmosphere ,Carbon dioxide ,medicine ,Food science ,Food Science - Abstract
Fresh pork loin slices were packaged under three different anoxic atmospheres (100% N 2 , 100% CO 2 and 50% N 2 +50% CO 2 ) and kept at two storage temperatures (-1 o C and 4 o C) and two pressures (1.0 and 1.2 atm.) in reusable, gas impermeable metal boxes. A gas headspace to meat weight ratio of >31 per kg was maintained. Carbon dioxide concentrations were unchanged (controlled) during storage. Microbiological, biochemical and physical measurements were made during the 3-week storage period. While atmospheric pressure did not have a significant impact on shelf-life, samples stored at -1 o C were satisfactory at 21 days in both CO 2 treatments. Samples under N 2 did not fare so well, showing higher levels of psychrotrophic bacteria after 18 days at -1 o C and 14 days at 4 o C. Samples kept in N 2 at 4 o C were spoiled within 2 weeks. Bacterial growth was slowest under 100% CO 2 , but samples stored under 50%-50% N 2 -CO 2 at 4 o C were also observed to be in good microbiological condition at 21 days of storage. Use of CO 2 -containing atmospheres provided more than 7 extra days of shelf-life at 4 o C over that attainable under 100% N 2 . Shelf-life at -1 o C was improved by 3 to 4 days over that at 4°C. Except for the length of time in storage, treatments had only a minor effect on pH, color, water holding capacity and shear force. These physicochemical characteristics were not factors which limited shelf-life
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- 2019
7. Evaluation of the effect of vincristine on platelet count in dogs with lymphoma
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J. Gagnon, O. Campbell, R. M. Dickinson, and V. S. MacDonald
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medicine.medical_specialty ,Vincristine ,Lymphoma ,040301 veterinary sciences ,Gastroenterology ,0403 veterinary science ,Dogs ,hemic and lymphatic diseases ,Internal medicine ,medicine ,Animals ,Clinical significance ,Platelet ,Dog Diseases ,Small Animals ,Retrospective Studies ,Platelet Morphology ,business.industry ,Platelet Count ,Incidence (epidemiology) ,0402 animal and dairy science ,04 agricultural and veterinary sciences ,medicine.disease ,Vincristine sulphate ,040201 dairy & animal science ,business ,medicine.drug - Abstract
OBJECTIVES: To determine the effect of vincristine administration on the platelet count, platelet morphology and incidence of thrombocytopenia in dogs diagnosed with lymphoma. MATERIAL AND METHODS: Medical records of 59 dogs with lymphoma receiving vincristine sulphate were reviewed retrospectively. RESULTS: Following vincristine administration the platelet count was higher and the number of thrombocytopenic patients was lower. No difference was found in the number of dogs with enlarged and elliptical platelets following vincristine treatment. CLINICAL SIGNIFICANCE: Vincristine administration increases platelet counts in dogs with lymphoma. It is not contra‐indicated to administer vincristine to dogs with lymphoma that are thrombocytopenic.
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- 2018
8. International migration as a determinant of emergency caesarean
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Theresa W. Gyorkos, Sonia Semenic, William D. Fraser, Lisa Merry, Rhonda Small, and Anita J. Gagnon
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Social condition ,Culture ,Ethnic group ,03 medical and health sciences ,0302 clinical medicine ,Nursing ,Pregnancy ,Risk Factors ,Environmental health ,Maternity and Midwifery ,Humans ,Medicine ,Vulnerable population ,Emergency caesarean ,030212 general & internal medicine ,Social determinants of health ,reproductive and urinary physiology ,A determinant ,Labor, Obstetric ,030219 obstetrics & reproductive medicine ,Cesarean Section ,business.industry ,Parturition ,Obstetrics and Gynecology ,Prenatal Care ,Emigration and Immigration ,Delivery, Obstetric ,medicine.disease ,female genital diseases and pregnancy complications ,Distress ,Socioeconomic Factors ,Female ,business - Abstract
Background High caesarean rates are of concern given associated risks. International migrant women (women born abroad) represent a substantial proportion of women giving birth in high-income countries (HICs) and face social conditions that may exacerbate childbearing health risks. Among migrant women, emergency rather than planned caesareans, tend to be more prevalent. This method of delivery can be stressful, physically harmful and result in an overall negative birth experience. Research establishing evidence of risk factors for emergency caesareans in migrants is insufficient. Aims (1) Describe potential pathways (with a focus on modifiable factors) by which migration, using internationally recommended migration indicators: country of birth, length of time in country, fluency in receiving-country language, migration classification and ethnicity, may lead to emergency caesarean; and (2) propose a framework to guide future research for understanding “potentially preventable” emergency caesareans in migrant women living in HICs. Discussion “Potentially preventable” emergency caesareans in migrant women are likely due to several modifiable, interrelated factors pre-pregnancy, during pregnancy and during labour. Migration itself is a determinant and also shapes other determinants. Complications and ineffective labour progress and/or foetal distress and ultimately the decision to perform an emergency caesarean may be the result of poor health (i.e., physiological effects), lack of support and disempowerment (i.e., psychological effects) and sub-optimal care. Conclusion Understanding the direct and indirect effects of migration on emergency caesarean is crucial so that targeted strategies can be developed and implemented for reducing unnecessary caesareans in this vulnerable population.
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- 2016
9. COVID-19 infection presenting as pancreatitis in a pregnant woman: A case report
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Claire Bovet, Paulina C. Altshuler, Amy J. Gagnon, Sarah R. Rabice, and Cathlyn Sullivan
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Abdominal pain ,Pediatrics ,medicine.medical_specialty ,Nausea ,Vital signs ,lcsh:Surgery ,Type 1 diabetes mellitus ,lcsh:Gynecology and obstetrics ,Article ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,Obstetrics and Gynaecology ,medicine ,Coronavirus 2019 ,030212 general & internal medicine ,lcsh:RG1-991 ,030219 obstetrics & reproductive medicine ,business.industry ,Obstetrics and Gynecology ,COVID-19 ,lcsh:RD1-811 ,medicine.disease ,Pancreatitis ,Etiology ,Vomiting ,Acute pancreatitis ,medicine.symptom ,business - Abstract
Background The coronavirus 2019 (COVID-19) pandemic has posed unique challenges in healthcare. In obstetrics, there is little information available to guide practice. As new data emerge, the spectrum of initial presenting symptoms has expanded from fever, cough, and dyspnea to gastrointestinal and other symptoms in both pregnant and non-pregnant patients. Case A 36-year-old woman, G4P2, at 33 weeks of gestation presented very early in the COVID-19 course with four days of cough and fever, without recent travel or known exposure. She appeared well, with stable vital signs, and was sent home to self-quarantine after a specimen for COVID-19 testing was collected. Two days later, she presented with nausea, vomiting, and abdominal pain, and was diagnosed with acute pancreatitis. Conclusion To date, no cases of human pancreatitis have been identified as related to a COVID-19 infection, although multiple other gastrointestinal symptoms have been described. Given the lack of other etiology, we consider the possibility that patient's acute pancreatitis could be secondary to COVID-19 infection., Highlights • COVID-19 has a variety of different presentations, including gastrointestinal symptoms. • Nausea, vomiting, and epigastric pain in pregnancy can have many different etiologies and should be thoroughly evaluated. • Pancreatitis can have a viral etiology, including COVID-19.
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- 2020
10. Tough decisions in medical specialty camps: Relationships between camp dosage, outcomes, and camper attendance
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Barry A. Garst, Ryan J. Gagnon, and Jasmine Townsend
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Male ,medicine.medical_specialty ,Coping (psychology) ,Health (social science) ,Adolescent ,media_common.quotation_subject ,Decision Making ,Specialty ,Structural equation modeling ,03 medical and health sciences ,0302 clinical medicine ,History and Philosophy of Science ,Respite care ,Adaptation, Psychological ,medicine ,Humans ,030212 general & internal medicine ,Child ,Competence (human resources) ,media_common ,030503 health policy & services ,Attendance ,United States ,Diabetes Mellitus, Type 1 ,Family medicine ,Camping ,Medicine ,Female ,0305 other medical science ,Psychology ,Positive Youth Development ,Autonomy ,Program Evaluation - Abstract
Rationale Medical specialty camps play a significant role in the lives of the youth they serve. These camps have been found to improve self-determination in campers, to develop camper skills in managing a disability or coping with a diagnosis, and to provide campers with respite/escape from the challenges associated with their disability or diagnosis. Youth attending medical specialty camps are often funded through full or partial scholarships, mitigating a significant constraint to their participation. These resources are limited, leading camp administrators charged with allocating funding to make challenging decisions in determining which campers would most benefit from camp participation. Objective This study examines a factor often linked to the escalating achievement of outcomes, repeated camp attendance, in 217 youth (ages 10–16) attending a one-week residential summer “Type 1 diabetes” camp. Specifically, two research questions were examined using a structural equation model (SEM): (1) what effect does repeat camp attendance (returning for multiple years) have on targeted outcome achievement, and (2) how does camper age moderate the relationship between repeated camp attendance and outcomes? Results The study results indicate across the 10-outcomes tested in the study (e.g., relatedness, autonomy, competence), repeat attendance had no statistically meaningful effect (p ≤ .05) on outcome scores, nor did camper age moderate the strength of relationship between attendance and outcomes. Conclusion The lack of relationship between attendance and outcomes supports prior meta-analyses suggesting the lack of value of repeated attendance, as does the non-significant moderational effect. The results of this study may illustrate to program providers and funders that no discernible benefit (in terms of targeted and measured outcomes in the current study) is due to repeat attendance, which can inform resource allocation and camper recruitment decisions.
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- 2018
11. Alcohol use among Bhutanese refugees in Nepal
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Lisa Merry, Montana Hewlett, Raz Mohammad Wali, Anita J. Gagnon, Risatul Islam, and Anit Mishra
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medicine.medical_specialty ,Health (social science) ,Alcohol Use Disorders Identification Test ,Sociology and Political Science ,business.industry ,Refugee ,Context (language use) ,Alcohol ,Excessive alcohol use ,chemistry.chemical_compound ,chemistry ,medicine ,Psychiatry ,business ,Law ,Demography - Abstract
Purpose – The purpose of this paper is to explore factors associated with alcohol use disorders (AUDs) among Bhutanese refugees in Nepal, where there has been a mass third-country resettlement operation in place since 2007. Design/methodology/approach – A case-control study was conducted in which the Alcohol Use Disorder Identification Test (AUDIT) was used to confirm AUDs and participants’ eligibility for placement in a case or control group. A translated questionnaire measuring demographic variables and context of drinking was also administered. Findings – In total, 128 questionnaires were completed (32 cases, 96 controls). Compared to participants without AUDs, those with AUDs were more likely to be older (36-50 years) (OR=10.5, 95 per cent CI 2.17-50.81), (50+years) (OR=10.3, 95 per cent CI 2.02-52.71), illiterate (OR=7.3 (2.80-18.42)), use tobacco (smoking or chewing) (OR=4.3 (1.84-10.01)) and be male (OR=3.5 (1.35-8.67)). Reasons for excessive alcohol use included unemployment, unoccupied time and increased family tensions. Originality/value – The study is the first of which the authors are aware that attempts to examine risk factors associated with AUDs within the context of a mass resettlement operation where camp services are winding down. The findings of this study suggest that greater attention needs to be given toward creating meaningful activities for adult, less educated male migrants awaiting resettlement.
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- 2015
12. Neutralizing circulating ghrelin by expressing a growth hormone secretagogue receptor-based protein protects against high-fat diet-induced obesity in mice
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L Zhu, Qinghua Wang, Y Anini, and J Gagnon
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Male ,medicine.medical_specialty ,media_common.quotation_subject ,Genetic Vectors ,Growth hormone secretagogue receptor ,Adipose tissue ,Hormone-sensitive lipase ,Peptide hormone ,Biology ,Diet, High-Fat ,Internal medicine ,Genetics ,medicine ,Animals ,Obesity ,Receptors, Ghrelin ,Receptor ,Molecular Biology ,media_common ,digestive, oral, and skin physiology ,Appetite ,Ghrelin ,Mice, Inbred C57BL ,Endocrinology ,Adipose Tissue ,Molecular Medicine ,medicine.symptom ,Weight gain ,hormones, hormone substitutes, and hormone antagonists - Abstract
Ghrelin is a stomach-derived peptide hormone that stimulates appetite and promotes adiposity through binding to the growth hormone secretagogue receptor (GHS-R1a). Administration of ghrelin in rodents increases weight gain due to stimulating food intake and reducing fat utilization. Therefore, reducing circulating ghrelin levels holds the potential to reduce weight gain. We developed a GHS-R1a-fusion constructs of a decoy protein containing the ligand-binding domains of the ghrelin receptor. Intramuscular injection of the GHSR/Fc plasmid decreased circulating levels of acylated-ghrelin. When challenged with the high fat diet, treated mice displayed reduced weight gain compared with controls, which was associated with reduced fat accumulation in the peritoneum but not lean mass. Quantitative PCR with reverse transcription showed increased PPARγ and hormone sensitive lipase transcripts levels in adipose tissue of treated animals, illustrating a preference for increased fat utilization. Intra-peritoneal glucose tolerance and insulin tolerance tests showed improved glucose clearance and insulin sensitivity in GHSR/Fc treated animals. We suggest that in vivo expression of the GHSR-based fusion protein prevents diet-induced weight gain, altering adipose gene expression and improving glucose tolerance. These findings, while confirming the role of ghrelin in peripheral energy metabolism, suggest that a strategy involving neutralization of the circulation ghrelin by intramuscular injection of the GHSR1/Fc fusion construct may find clinical application in the treatment of obesity.
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- 2015
13. Strengthening healthcare delivery in Haiti through nursing continuing education
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N. Marcelin, J. Tuck, Lisa Merry, M. Clark, M. Julmisse, and Anita J. Gagnon
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business.industry ,Nursing research ,Nurse performance ,InformationSystems_GENERAL ,Team nursing ,Nursing ,Occupational health nursing ,Health care ,Medicine ,Nurse education ,business ,General Nursing ,Primary nursing ,Health policy - Abstract
Aim The aim of this paper was to (1) highlight nursing continuing education as a key initiative for strengthening healthcare delivery in low-resource settings, and (2) provide an example of a nursing continuing education programme in Haiti. Background Haiti and other low-resource settings face extreme challenges including severe shortages of healthcare workers, high rates of nurse out-migration and variations in nurse competency at entry-to-practice. Nursing continuing education has the potential to address these challenges and improve healthcare delivery through enhanced nurse performance and retention; however, it is underutilized in low-resource settings. Methods A case study is presented from the Hopital Universitaire de Mirebalais in Mirebalais, Haiti of a new nursing continuing education programme called the Beyond Expert Program. Results The case study highlights eight key dimensions of nursing continuing education in low-resource settings: (1) involving local stakeholders in planning process, (2) targeting programme to nurse participant level and area of care, (3) basing course content on local context, (4) including diverse range of nursing topics, (5) using participatory teaching methods, (6) addressing resource constraints in time and scheduling, (7) evaluating and monitoring outcomes, and (8) establishing partnerships. The case study provides guidance for others wishing to develop programmes in similar settings. Conclusion Creating a nursing continuing education programme in a low-resource setting is possible when there is commitment and engagement for nursing continuing education at all levels of the organization. Implications for Nursing and Health Policy Our report suggests a need for policy-makers in resource-limited settings to make greater investments in nursing continuing education as a focus of human resources for health, as it is an important strategy for promoting nurse retention, building the knowledge and skill of the existing nursing workforce, and raising the image of nursing in low-resource settings.
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- 2015
14. Robotic stereotactic body radiation therapy for elderly medically inoperable early-stage non-small cell lung cancer
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Robert L. Hong, David Duhamel, Zachary D. Horne, D. McRae, Nimrah A. Baig, Gregory J. Gagnon, Nadim M. Nasr, and Sana D. Karam
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Oncology ,Univariate analysis ,medicine.medical_specialty ,business.industry ,Stereotactic body radiation therapy ,Targets and Therapy [Lung Cancer] ,SABR volatility model ,medicine.disease ,Effective dose (radiation) ,Cyberknife ,Median follow-up ,Internal medicine ,Statistical significance ,medicine ,Radiology ,business ,Lung cancer ,Original Research - Abstract
Sana D Karam,1 Zachary D Horne,1 Robert L Hong,1,2 Nimrah Baig,1 Gregory J Gagnon,4 Don McRae,2 David Duhamel,3 Nadim M Nasr1,21Department of Radiation Oncology, Georgetown University Hospital, Washington, DC, USA; 2Department of Radiation Oncology, Virginia Hospital Center, Arlington, VA, USA; 3Department of Pulmonary/Critical Care Medicine, Virginia Hospital Center, Arlington, VA, USA; 4Department of Radiation Oncology, Frederick Memorial Hospital, Frederick, MD, USAIntroduction: Stereotactic body radiation therapy (SBRT) is being increasingly applied in the treatment of non-small cell lung cancer (NSCLC) because of its high local efficacy. This study aims to examine survival outcomes in elderly patients with inoperable stage I NSCLC treated with SBRT.Methods: A total of 31 patients with single lesions treated with fractionated SBRT from 2008 to 2011 were retrospectively analyzed. A median prescribed dose of 48 Gy was delivered to the prescription isodose line, over a median of four treatments. The median biologically effective dose (BED) was 105.6 (range 37.50–180), and the median age was 73 (65–90 years). No patient received concurrent chemotherapy.Results: With a median follow up of 13 months (range, 4–40 months), the actuarial median overall survival (OS) and progression-free survival (PFS) were 32 months, and 19 months, respectively. The actuarial median local control (LC) time was not reached. The survival outcomes at median follow up of 13 months were 80%, 68%, and 70% for LC, PFS, and OS, respectively. Univariate analysis revealed a BED of >100 Gy was associated with improved LC rates (P = 0.02), while squamous cell histology predicted for worse LC outcome at median follow up time of 13 months (P = 0.04). Increased tumor volume was a worse prognostic indicator of both LC and OS outcomes (P < 0.05). Finally, female gender was a better prognostic factor for OS than male gender (P = 0.006). There were no prognostic indicators of PFS that reached statistical significance. No acute or subacute high-grade toxicities were documented.Conclusion: SBRT is a safe, feasible, and effective treatment option for elderly patients with inoperable early stage NSCLC. BED, histology, and tumor size are predictors of local control, while tumor size and gender predict OS.Keywords: SABR, CyberKnife, BED, gender, histology
- Published
- 2017
15. Challenges newly-arrived migrant women in Montreal face when needing maternity care: Health care professionals’ perspectives
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Sandra Peláez, Lisa Merry, Kristin Hendricks, and Anita J. Gagnon
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Adult ,Male ,medicine.medical_specialty ,Canada ,Attitude of Health Personnel ,Health Personnel ,Case study ,Healthcare providers ,Nurses ,Social Workers ,Health literacy ,Health Services Accessibility ,03 medical and health sciences ,0302 clinical medicine ,Nursing ,Pregnancy ,Physicians ,Health care ,medicine ,Social position ,Humans ,Maternal Health Services ,030212 general & internal medicine ,Cultural Competency ,Qualitative Research ,Social policy ,Transients and Migrants ,030505 public health ,Social work ,business.industry ,Health Policy ,Public health ,Research ,Communication Barriers ,Public Health, Environmental and Occupational Health ,Health services research ,Quebec ,Migrant ,Country of origin ,Health services ,Childbirth ,Female ,Perception ,0305 other medical science ,business - Abstract
Background People who leave their country of origin, or the country of habitual residence, to establish themselves permanently in another country are usually referred to as migrants. Over half of all births in Montreal, Canada are to migrant women. To understand healthcare professionals’ attitudes towards migrants that could influence their delivery of care, our objective was to explore their perspectives of challenges newly-arrived migrant women from non-Western countries face when needing maternity care. Method In this qualitative multiple case study, we conducted face-to-face interviews with 63 health care professionals from four teaching hospitals in Montreal, known for providing maternity care to a high volume of migrant women. Interviews were transcribed and thematically analysed. Results Physicians, nurses, social workers, and therapists participated; 90% were female; and 17% were themselves migrants from non-Western countries. According to participants, newly-arrived migrant women face challenges at two levels: (a) direct care (e.g., understanding Canadian health care professionals’ expectations, communicating effectively with health care professionals), and (b) organizational (e.g., access to appropriate health care). Challenges women face are strongly influenced by the migrant woman’s background as well as social position (e.g., general education, health literacy, socio-cultural integration) and by how health care professionals balance women’s needs with perceived requirement to adhere to standard procedures and regulations. Conclusions Health care professionals across institutions agreed that maternity care-related challenges faced by newly-arrived migrant women often are complex in that they are simultaneously driven by conflicting values: those based on migrant women’s sociocultural backgrounds versus those related to the implementation of Canadian guidelines for maternity care in which consideration of migrant women’s particular needs are not priority.
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- 2017
16. Accumulation, internalization and therapeutic efficacy of neuropilin-1-targeted liposomes
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Eric E. Paoli, Robert D. Cardiff, Katherine W. Ferrara, Elizabeth S. Ingham, Hua Zhang, M. Karen J. Gagnon, Sarah Tam, Azadeh Kheirolomoom, Brett Z. Fite, and Lisa M. Mahakian
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Contrast Media ,Pharmaceutical Science ,Gadolinium ,Peptide ,Optical imaging ,Polyethylene Glycols ,Mice ,Heterocyclic Compounds ,Antibiotics ,Neoplasms ,Pharmacology & Pharmacy ,Internalization ,Peptide sequence ,Cancer ,media_common ,chemistry.chemical_classification ,Oligopeptide ,Liposome ,Antibiotics, Antineoplastic ,Tumor ,Pharmacology and Pharmaceutical Sciences ,Chemical Engineering ,Antineoplastic ,Tumor Burden ,Biochemistry ,5.1 Pharmaceuticals ,Drug delivery ,Female ,Development of treatments and therapeutic interventions ,Oligopeptides ,medicine.drug ,Cell Survival ,media_common.quotation_subject ,Biomedical Engineering ,Bioengineering ,Cell Line ,In vivo ,Cell Line, Tumor ,Organometallic Compounds ,medicine ,Animals ,Humans ,Doxorubicin ,Toxicity ,Neuropilin-1 ,chemistry ,Liposomes ,Biophysics ,CendR - Abstract
Advancements in liposomal drug delivery have produced long circulating and very stable drug formulations. These formulations minimize systemic exposure; however, unfortunately, therapeutic efficacy has remained limited due to the slow diffusion of liposomal particles within the tumor and limited release or uptake of the encapsulated drug. Here, the carboxyl-terminated CRPPR peptide, with affinity for the receptor neuropilin-1 (NRP), which is expressed on both endothelial and cancer cells, was conjugated to liposomes to enhance the tumor accumulation. Using a pH sensitive probe, liposomes were optimized for specific NRP binding and subsequent cellular internalization using in vitro cellular assays. Liposomes conjugated with the carboxyl-terminated CRPPR peptide (termed C-LPP liposomes) bound to the NRP-positive primary prostatic carcinoma cell line (PPC-1) but did not bind to the NRP-negative PC-3 cell line, and binding was observed with liposomal peptide concentrations as low as 0.16mol%. Binding of the C-LPP liposomes was receptor-limited, with saturation observed at high liposome concentrations. The identical peptide sequence bearing an amide terminus did not bind specifically, accumulating only with a high (2.5mol%) peptide concentration and adhering equally to NRP positive and negative cell lines. The binding of C-LPP liposomes conjugated with 0.63mol% of the peptide was 83-fold greater than liposomes conjugated with the amide version of the peptide. Cellular internalization was also enhanced with C-LPP liposomes, with 80% internalized following 3h incubation. Additionally, fluorescence in the blood pool (~40% of the injected dose) was similar for liposomes conjugated with 0.63mol% of carboxyl-terminated peptide and non-targeted liposomes at 24h after injection, indicating stable circulation. Prior to doxorubicin treatment, in vivo tumor accumulation and vascular targeting were increased for peptide-conjugated liposomes compared to non-targeted liposomes based on confocal imaging of a fluorescent cargo, and the availability of the vascular receptor was confirmed with ultrasound molecular imaging. Finally, over a 4-week course of therapy, tumor knockdown resulting from doxorubicin-loaded, C-LPP liposomes was similar to non-targeted liposomes in syngeneic tumor-bearing FVB mice and C-LPP liposomes reduced doxorubicin accumulation in the skin and heart and eliminated skin toxicity. Taken together, our results demonstrate that a carboxyl-terminated RXXR peptide sequence, conjugated to liposomes at a concentration of 0.63mol%, retains long circulation but enhances binding and internalization, and reduces toxicity.
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- 2014
17. Assessing global partnerships in graduate nursing
- Author
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Address Malata, Amelia P. Birch, Anita J. Gagnon, and J. Tuck
- Subjects
Canada ,Malawi ,Models, Educational ,Capacity Building ,business.industry ,International Educational Exchange ,Capacity building ,Pilot Projects ,Qualitative property ,Context (language use) ,Guideline ,Global Health ,Education ,Interinstitutional Relations ,Nursing ,General partnership ,Health care ,Humans ,Medicine ,Nurse education ,Cultural Competency ,business ,Education, Nursing, Graduate ,Cultural competence ,General Nursing - Abstract
North-South partnerships in graduate nursing education can prepare students to address global healthcare issues, increase cultural competence, and build research capacity. However, the current literature does not include a critical and systematic assessment of partnerships using established guidelines. This paper has two objectives: 1) Find and refine a suitable measure to assess a North-South inter-institutional research and clinical partnership in nursing; 2) Pilot test an assessment measure and describe the results of a systematic institutional self-evaluation of a developing North-South research and clinical partnership within a graduate nursing program. The first objective was addressed by searching for, examining and selecting an assessment measure. The second objective was obtained by applying the assessment measure to a developing graduate-level research and clinical partnership between a Canadian School of Nursing and a Malawian College of Nursing; qualitative data collected included information from a document review and subjective experiences of partners. Results showed that when appropriate revisions are made to an existing guideline, it is applicable to use as an assessment measure for North-South inter-institutional research and clinical partnerships. Recommendations for improvement were made, allowing the guideline to be more specific for research and clinical partnerships. Results demonstrated that the existing Canadian-Malawian partnership was strongest in the guideline category of "shaping the purpose and scope of the partnership," and weakest in "partnership implementation and context." This paper implies that: 1) evaluation can strengthen partnerships and enhance educational experience for nursing students; 2) research comparing and contrasting different genres of partnerships could help determine which type is the most appropriate for an institutions' particular outcome goals; and 3) effective establishment and maintenance of North-South partnership occurs through an on-going process of evaluation.
- Published
- 2013
18. Predictors of emergency cesarean delivery among international migrant women in Canada
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Anita J. Gagnon, Lisa Merry, and Kristen R. Haase
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medicine.medical_specialty ,Time Factors ,Refugee ,media_common.quotation_subject ,Immigration ,Emigrants and Immigrants ,Logistic regression ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,Risk Factors ,Health insurance ,Birth Weight ,Humans ,Medicine ,030212 general & internal medicine ,Emergency Cesarean Delivery ,media_common ,Ontario ,Model migration ,Medically Uninsured ,Refugees ,030219 obstetrics & reproductive medicine ,British Columbia ,Cesarean Section ,business.industry ,Infant, Newborn ,Quebec ,Obstetrics and Gynecology ,General Medicine ,Odds ratio ,Confidence interval ,3. Good health ,Logistic Models ,Emergency medicine ,Income ,Female ,Emergencies ,business ,Demography - Abstract
Objective To determine the predictors of emergency cesarean delivery among international migrant women. Methods Between February 2006 and May 2009, 1025 postpartum migrant women were recruited from 12 hospitals in Toronto, Montreal, and Vancouver. Logistic regression was used to model migration, social, health service, and biomedical factors predictive of emergency cesarean. Results Overall, 14% percent of participants underwent emergency cesarean. The greatest risk was for women having their first delivery (odds ratio [OR], 5.9; 95% confidence interval [CI], 3.1–11.3); newborns weighing 4000 g or more (OR, 3.5; 95% CI, 1.9–6.5); no health insurance (OR, 2.8; 95% CI, 1.2–6.4); delivery on a Friday (OR, 2.2; 95% CI, 1.2–3.9); incomes of less than 30 000 Canadian dollars (OR, 1.9; 1.2–3.0); and induced labor (OR, 1.8; 95% CI, 1.1–3.0). Compared with immigrants, asylum seekers (OR, 0.3; 95% CI, 0.2–0.6) and refugees (OR, 0.5; 95% CI, 0.2–1.0) were protected against emergency cesarean. Conclusion Indicators specific to, or more common among, migrants were informative in assessing the likelihood of emergency cesarean. The risk associated with being uninsured, day of delivery, income, and immigration class suggests the importance of considering non-biomedical factors in reducing the need for emergency cesarean among migrants.
- Published
- 2013
19. International migration to Canada: The post-birth health of mothers and infants by immigration class
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Lisa Merry, Geoffrey Dougherty, Cindy-Lee Dennis, Jean-François Saucier, Elizabeth Stanger, Becky Palmer, Anita J. Gagnon, Donna E. Stewart, and Olive Wahoush
- Subjects
Postnatal Care ,Postpartum women ,Adult ,Economic growth ,Canada ,Health (social science) ,Refugee ,media_common.quotation_subject ,Health Status ,Immigration ,education ,Emigrants and Immigrants ,Mothers ,Health(social science) ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,History and Philosophy of Science ,Health care ,Childbirth ,Medicine ,Humans ,030212 general & internal medicine ,10. No inequality ,media_common ,Refugees ,030505 public health ,business.industry ,Emmigration and immigration ,Infant ,Emigration and Immigration ,3. Good health ,Access to health care ,Needs assessment ,Female ,0305 other medical science ,business ,Psychosocial ,Needs Assessment ,Demography ,Cohort study - Abstract
There are over 214 million international migrants worldwide, half of whom are women, and all of them assigned by the receiving country to an immigration class. Immigration classes are associated with certain health risks and regulatory restrictions related to eligibility for health care. Prior to this study, reports of international migrant post-birth health had not been compared between immigration classes, with the exception of our earlier, smaller study in which we found asylum-seekers to be at greatest risk for health concerns. In order to determine whether refugee or asylum-seeking women or their infants experience a greater number or a different distribution of professionally-identified health concerns after birth than immigrant or Canadian-born women, we recruited 1127 migrant (and in Canada
- Published
- 2013
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20. Prediction of Duration of Breastfeeding among Migrant and Canadian-Born Women: Results from a Multi-Center Study
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Olive Wahoush, Cindy-Lee Dennis, Andraea Van Hulst, Anita J. Gagnon, and Geoff Dougherty
- Subjects
Adult ,Canada ,medicine.medical_specialty ,Longitudinal study ,Breastfeeding ,Logistic regression ,Young Adult ,Surveys and Questionnaires ,medicine ,Humans ,Longitudinal Studies ,Prospective Studies ,Young adult ,Maternal Behavior ,Prospective cohort study ,Transients and Migrants ,Obstetrics ,business.industry ,medicine.disease ,Breast Feeding ,Pediatrics, Perinatology and Child Health ,Female ,business ,Breast engorgement ,Breast feeding ,Postpartum period ,Forecasting ,Demography - Abstract
To examine and compare predictors of breastfeeding duration among migrant and Canadian-born women.As part of a longitudinal study, a sample of 1503 mothers was recruited from 12 hospitals in Canada who completed questionnaires at 1 and 16 weeks postpartum. Following bivariate analysis, multivariate logistic regression analyses were completed to examine and compare predictors of continued breastfeeding at 16 weeks postpartum among migrant and Canadian-born women.Among migrant women, factors predictive of breastfeeding duration included maternal age ≥ 35 years, primiparity, and breast engorgement pain at 1 week postpartum. Factors predictive of discontinued breastfeeding in this group included maternal age20 years, higher gender-related development index of country of origin, no previous breastfeeding experience, breastfeeding duration of peers6 months, planned duration of exclusive breastfeeding6 months, and not exclusively breastfeeding at 1 week postpartum. Among Canadian-born women, factors predictive of breastfeeding duration included residence in Vancouver and maternal age ≥ 35 years. Factors predictive of discontinued breastfeeding included residence in Toronto, maternal age20 years, smoking at 16 weeks postpartum, primiparity, planned duration of exclusive breastfeeding6 months, and not exclusively breastfeeding at 1 week postpartum.Although certain predictors for breastfeeding duration were similar between migrant and Canadian-born women, several were dissimilar, suggesting that these groups might benefit from different strategies to optimize breastfeeding outcomes.
- Published
- 2013
21. Use of reproductive health care services among urban migrant women in Bangladesh
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Mohammad Mainul Islam and Anita J. Gagnon
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Adult ,Rural Population ,medicine.medical_specialty ,Adolescent ,Urban Population ,Population ,Reproductive medicine ,Birth rate ,Migrant women ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,Environmental health ,Obstetrics and Gynaecology ,medicine ,Urban ,Humans ,030212 general & internal medicine ,education ,Child ,Contraception Behavior ,Reproductive health ,Medicine(all) ,Transients and Migrants ,education.field_of_study ,Bangladesh ,030219 obstetrics & reproductive medicine ,business.industry ,Internal migration ,Obstetrics and Gynecology ,Care services ,General Medicine ,Middle Aged ,Health Surveys ,Infant mortality ,female genital diseases and pregnancy complications ,Reproductive Medicine ,Socioeconomic Factors ,Family planning ,Female ,Reproductive Health Services ,Rural area ,business ,Research Article - Abstract
Background Recent internal migration flows from rural to urban areas pose challenges to women using reproductive health care services in their migratory destinations. No studies were found which examined the relationship between migration, migration-associated indicators and reproductive health care services in Bangladesh. Methods We analyzed the 2006 Bangladesh Urban Health Survey (data made publically available in June 2013) of 14,191 ever-married women aged 10–59 years. Cross tabulations and logistic regression were conducted. Results Migrants and non-migrants did not differ significantly in their use of modern contraceptives and treatment for STI but were less likely to receive ANC even after controlling for a range of variables. Compared to non-migrants, more migrants had home births, did not take vitamin A after delivery, and had no medical exam post-birth. Migrant women being village-born (rather than urban-born) were associated with risk of diminished: use of ANC; treatment for STI; medical exam post-birth; vitamin A post-birth. Migrating for work or education (rather than other reasons) was associated with risk of diminished: use of ANC; use of modern facilities for birth; and medical exam post-birth. Each additional year lived in urban areas was associated with a greater likelihood of receiving ANC. Conclusions Women who migrated to urban areas in Bangladesh were significantly less likely than non-migrants to use reproductive health care services related to pregnancy care. Pro-actively identifying migrant women, especially those who originated from villages or migrated for work or education may be warranted to ensure optimal use of pregnancy-related services.
- Published
- 2016
22. Postpartum Pain in the Community Among Migrant and Non-migrant Women in Canada
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Abbey Mahon, Olivia Lu, Anita J. Gagnon, and Lisa Merry
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Postnatal Care ,medicine.medical_specialty ,Canada ,Epidemiology ,media_common.quotation_subject ,Immigration ,Alternative medicine ,Breast pain ,Maternal Welfare ,Emigrants and Immigrants ,Health Services Accessibility ,03 medical and health sciences ,0302 clinical medicine ,Nursing ,Patient-Centered Care ,medicine ,Humans ,Postpartum pain ,030212 general & internal medicine ,skin and connective tissue diseases ,media_common ,Language ,Refugees ,030219 obstetrics & reproductive medicine ,business.industry ,Public health ,Postpartum Period ,Public Health, Environmental and Occupational Health ,Prenatal Care ,Delivery, Obstetric ,Perineal tearing ,Socioeconomic Factors ,Family medicine ,Female ,medicine.symptom ,business ,Mastodynia - Abstract
International migrant women of childbearing age represent a large proportion of immigrants to high-income countries, yet research focusing on their postpartum health is limited. We investigated predictive factors for breast and non-breast pain 1 week post-birth in migrant and non-migrant women in Canada. Among migrant women, difficulty accessing health services; being from a middle-or high-income country; poor functionality in English and French; living with the father of their infant; and having no regular care provider were predictive of breast pain. Among non-migrant women, difficulties accessing health services, multiparity and prenatal education were predictive of breast pain, while receiving an epidural and having no regular care provider were predictive of non-breast pain. Among both groups, difficulties accessing health services and having no regular care provider were predictive of breast pain, while second degree or higher perineal tearing was predictive of non-breast pain. Migration-specific indicators should be considered in postpartum care planning.
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- 2016
23. Predictors of breastfeeding exclusivity among migrant and Canadian-born women: results from a multi-centre study
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Andrea Van Hulst, Cindy-Lee Dennis, Geoff Dougherty, and Anita J. Gagnon
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Pediatrics ,medicine.medical_specialty ,Pregnancy ,Longitudinal study ,Nutrition and Dietetics ,Neonatal intensive care unit ,business.industry ,media_common.quotation_subject ,Immigration ,Public Health, Environmental and Occupational Health ,Breastfeeding ,Obstetrics and Gynecology ,Logistic regression ,medicine.disease ,Pediatrics, Perinatology and Child Health ,medicine ,Risk factor ,business ,Breast feeding ,Demography ,media_common - Abstract
The objective of this study was to examine and compare predictors of breastfeeding exclusivity among migrant and Canadian-born women. As part of a longitudinal study, a sample of 1184 mothers were recruited from 12 hospitals in Canada and completed questionnaires at 1 and 16 weeks post-partum that included diverse questions from the following domains: demographic, social, migration, obstetrical, breastfeeding and maternal mood. After bivariate analysis, multivariate logistic regression analysis was completed to examine and compare predictors of exclusive breastfeeding at 16 weeks post-partum. Among migrant women, factors predictive of breastfeeding exclusivity included non-refugee immigrant or asylum-seeking status, residence in Toronto or Vancouver, maternal age of ≥35 years, feels most comfortable in the country of origin or nowhere and higher Gender-related Development Index of the country of origin. Factors predictive of not exclusively breastfeeding included maternal age of
- Published
- 2012
24. Large intestine–targeted, nanoparticle-releasing oral vaccine to control genitorectal viral infection
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James Talton, Jay A. Berzofsky, Yongjun Sui, Igor M. Belyakov, Qing Zhu, Bärbel Eppler, Russell J. Mumper, Guofeng Zhang, Zijian Wang, Robert C. Waters, Dennis M. Klinman, Tshaka Cunningham, James F. Kirk, and Susan J. Gagnon
- Subjects
Molecular Sequence Data ,Administration, Oral ,Vaccinia virus ,CD8-Positive T-Lymphocytes ,Biology ,Article ,General Biochemistry, Genetics and Molecular Biology ,Lipopeptides ,Mice ,Drug Delivery Systems ,Immune system ,Adjuvants, Immunologic ,Polylactic Acid-Polyglycolic Acid Copolymer ,Polymethacrylic Acids ,Immunity ,Vaccinia ,medicine ,Animals ,Large intestine ,Amino Acid Sequence ,Intestine, Large ,Lactic Acid ,Immunity, Mucosal ,Mice, Inbred BALB C ,Transmission (medicine) ,Ovary ,Rectum ,Viral Vaccines ,General Medicine ,Viral Load ,Small intestine ,Specific Pathogen-Free Organisms ,Vaccination ,Poly I-C ,medicine.anatomical_structure ,Oligodeoxyribonucleotides ,Organ Specificity ,Vaccines, Subunit ,Vagina ,Immunology ,Nanoparticles ,Female ,Animal studies ,Viral load ,Polyglycolic Acid - Abstract
Both rectal and vaginal mucosal surfaces serve as transmission routes for pathogenic microorganisms. Vaccination through large intestinal mucosa, previously proven protective for both of these mucosal sites in animal studies, can be achieved successfully by direct intracolorectal (i.c.r.) administration, but this route is clinically impractical. Oral vaccine delivery seems preferable but runs the risk of the vaccine's destruction in the upper gastrointestinal tract. Therefore, we designed a large intestine-targeted oral delivery with pH-dependent microparticles containing vaccine nanoparticles, which induced colorectal immunity in mice comparably to colorectal vaccination and protected against rectal and vaginal viral challenge. Conversely, vaccine targeted to the small intestine induced only small intestinal immunity and provided no rectal or vaginal protection, demonstrating functional compartmentalization within the gut mucosal immune system. Therefore, using this oral vaccine delivery system to target the large intestine, but not the small intestine, may represent a feasible new strategy for immune protection of rectal and vaginal mucosa.
- Published
- 2012
25. Single-session and multisession CyberKnife radiosurgery for spine metastases—University of Pittsburgh and Georgetown University experience
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Xinxin Dong, Fraser Henderson, Brandon Stone, Malolan S. Rajagopalan, Annette E. Quinn, Steven A. Burton, Peter C. Gerszten, Dwight E. Heron, and Gregory J. Gagnon
- Subjects
medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,Magnetic resonance imaging ,Retrospective cohort study ,General Medicine ,Radiosurgery ,Pain control ,Clinical endpoint ,Medicine ,CyberKnife Radiosurgery ,business ,Nuclear medicine ,Single session ,Survival analysis - Abstract
Object The authors compared the effectiveness of single-session (SS) and multisession (MS) stereotactic radiosurgery (SRS) for the treatment of spinal metastases. Methods The authors conducted a retrospective review of the clinical outcomes of 348 lesions in 228 patients treated with the CyberKnife radiosurgery at the University of Pittsburgh Cancer Institute and Georgetown University Medical Center. One hundred ninety-five lesions were treated using an SS treatment regimen (mean 16.3 Gy), whereas 153 lesions were treated using an MS approach (mean 20.6 Gy in 3 fractions, 23.8 Gy in 4 fractions, and 24.5 Gy in 5 fractions). The primary end point was pain control. Secondary end points included neurological deficit improvement, toxicity, local tumor control, need for retreatment, and overall survival. Results Pain control was significantly improved in the SS group (SSG) for all measured time points up to 1 year posttreatment (100% vs 88%, p = 0.003). Rates of toxicity and neurological deficit improvement were not statistically different. Local tumor control was significantly better in the MS group (MSG) up to 2 years posttreatment (96% vs 70%, p = 0.001). Similarly, the need for retreatment was significantly lower in the MSG (1% vs 13%, p < 0.001). One-year overall survival was significantly greater in the MSG than the SSG (63% vs 46%, p = 0.002). Conclusions Single-session and MS SRS regimens are both effective in the treatment of spinal metastases. While an SS approach provides greater early pain control and equivalent toxicity, an MS approach achieves greater tumor control and less need for retreatment in long-term survivors.
- Published
- 2012
26. Assessing Cost-Effectiveness And Key Value Drivers of Adjuvant Triglyceride Lowering Therapy In Management of Patients with A Rare Genetic Syndrome
- Author
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E Priedane, Al-Dakkak, A Kumar, and J Gagnon
- Subjects
medicine.medical_specialty ,Triglyceride ,Genetic syndromes ,business.industry ,Cost effectiveness ,Health Policy ,medicine.medical_treatment ,Public Health, Environmental and Occupational Health ,chemistry.chemical_compound ,chemistry ,Key (cryptography) ,Physical therapy ,Medicine ,business ,Intensive care medicine ,Value drivers ,Adjuvant - Published
- 2017
27. International migration and gestational diabetes mellitus: a systematic review of the literature and meta-analysis
- Author
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Mridula Bandyopadhyay, Juliana Rigol-Chachamovich, Anita J. Gagnon, Babill Stray-Pedersen, Sarah McDermott, and Donna E. Stewart
- Subjects
Pregnancy ,Epidemiology ,business.industry ,MEDLINE ,Publication bias ,CINAHL ,medicine.disease ,female genital diseases and pregnancy complications ,Impaired glucose tolerance ,Gestational diabetes ,Risk Estimate ,Meta-analysis ,Pediatrics, Perinatology and Child Health ,Medicine ,business ,Demography - Abstract
Influxes of migrant women of childbearing age to receiving countries have made their perinatal health status a key priority for many governments. The international research collaboration Reproductive Outcomes And Migration (ROAM) reviewed published studies to assess whether migrants in countries of resettlement have a greater risk of gestational diabetes mellitus (GDM) than women in receiving countries. A systematic review of the literature from Medline, Embase, PsychInfo and CINAHL from 1990 to 2009 included studies of migrant women and GDM. Studies were excluded if there was no cross-border movement or comparison group or if the receiving country was not the country of resettlement. Studies were assessed for quality, analysed descriptively and meta-analysed. Twenty-four reports (representing >120,000 migrants) met our inclusion criteria. Migrants were described primarily by geographic origin; other relevant aspects (e.g. time in country, language fluency) were rarely studied. Migrants' results for GDM were worse than those for receiving-country women in 79% of all studies. Meta-analyses showed that, compared with receiving-country women, Caribbean, African, European and Northern European women were at greater risk of GDM, while North Africans and North Americans had risks similar to receiving-country women. Although results of the 31 comparisons of Asians, East Africans or non-Australian Oceanians were too heterogeneous to provide a single GDM risk estimate for migrant women, only one comparison was below the receiving-country comparison group, all others presented a higher risk estimate. The majority of women migrants to resettlement countries are at greater risk for GDM than women resident in receiving countries. Research using clear, specific migrant definitions, adjusting for relevant risk factors and including other aspects of migration experiences is needed to confirm and understand these findings.
- Published
- 2011
28. Risk Factors for Posttreatment Edema in Patients Treated With Stereotactic Radiosurgery for Meningiomas
- Author
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Keith Unger, Walter C. Jean, Pamela Randolph-Jackson, Edward F Aulisi, Jeffrey Jacobson, C.E. Lominska, Robert L. White, Gregory J. Gagnon, and June Chanyasulkit
- Subjects
Adult ,Male ,medicine.medical_treatment ,Brain Edema ,Radiation Dosage ,Radiosurgery ,Meningioma ,Postoperative Complications ,Risk Factors ,Cyberknife ,Edema ,Meningeal Neoplasms ,medicine ,Humans ,Aged ,Aged, 80 and over ,Univariate analysis ,business.industry ,Incidence ,Incidence (epidemiology) ,Middle Aged ,medicine.disease ,Tumor Burden ,Toxicity ,Female ,Surgery ,Neurology (clinical) ,medicine.symptom ,Complication ,business ,Nuclear medicine ,Follow-Up Studies - Abstract
Background: Peritumoral edema is a recognized complication following stereotactic radiosurgery (SRS). Objective: To evaluate the risk of posttreatment peritumoral edema following SRS for intracranial meningiomas and determine predictive factors. Methods: Between 2002 and 2008, 173 evaluable patients underwent CyberKnife or Gamma Knife SRS for meningiomas. Eighty-four patients (49%) had prior surgical resections, 13 patients had World Health Organization grade II (atypical) meningiomas, and 117 patients had a neurological deficit before SRS. Sixty-two tumors were in parasagittal, parafalcine, and convexity locations. The median tumor volume was 4.7 mL (range, 0.1–231.8 mL). The median prescribed dose and median prescribed biologically equivalent dose were 15 Gy (range, 9–40 Gy) and 67 Gy (range, 14–116 Gy), respectively. Ninety-seven patients were treated with single-fraction SRS, 74 received 2 to 5 fractions, and 2 received >5 fractions. Results: The median follow-up was 21.0 months. Thirteen patients (8%) developed symptomatic peritumoral edema, with a median onset time of 4.5 months (range, 0.2– 9.5 months). The 3-, 6-, 12-, and 24-month actuarial symptomatic edema rates were 2.9%, 4.9%, 7.7%, and 8.5%, respectively. The crude tumor control rate was 94%. On univariate analysis, large tumor volume (P = .01) and single-fraction SRS (P = .04) were predictive for development of posttreatment edema. Conclusion: SRS meningioma treatment demonstrated a low incidence of toxicity; however, large tumor volumes and single-fraction SRS treatment had an increased risk for posttreatment edema. Risk factors for edema should be considered in meningiomas treatment.
- Published
- 2011
29. Refugee Claimant Women and Barriers to Health and Social Services Post-birth
- Author
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Anita J. Gagnon, Lisa Merry, Nahid Kalim, and Stephanie S. Bouris
- Subjects
Adult ,Canada ,Social Work ,medicine.medical_specialty ,Referral ,Refugee ,Psychological intervention ,Mothers ,Health Services Accessibility ,Nursing ,Health care ,medicine ,Humans ,Prospective Studies ,Social determinants of health ,Qualitative Research ,Language ,Refugees ,business.industry ,Public health ,Postpartum Period ,Public Health, Environmental and Occupational Health ,Social Support ,General Medicine ,Health Literacy ,Social Class ,Income ,Educational Status ,Female ,business ,Psychosocial ,Postpartum period - Abstract
Objectives: Access to services for international migrants living in Canada is especially important during the postpartum period when additional health services and support are key to maternal and infant health. Recent studies found refugee claimant women to have a high number of postpartum health and social concerns that were not being addressed by the Canadian health care system. The current project aimed to gain greater understanding of the barriers these vulnerable migrant women face in accessing health and social services postpartum. Methods: Qualitative text data on services that claimant women received post-birth and notes (recorded by research nurses) about their experiences in accessing and receiving services were examined. Thematic analysis was conducted to identify common themes related to access barriers. Results: Of particular concern were the refusal of care for infants of mothers covered under IFHP, maternal isolation and difficulty for public health nurses to reach women postpartum. Also problematic was the lack of assessment, support and referrals for psychosocial concerns. Conclusions: Better screening and referral for high-risk claimant women and education of health care providers on claimants’ coverage and eligibility for services may improve the addressing of health and social concerns. Expansion of claimants’ health benefits to include psychotherapy without prior approval by Citizenship and Immigration Canada is also recommended. Interventions aimed at social determinants underlying health care access issues among childbearing refugee claimants should also be explored. These might include providing access to subsidized language courses, social housing and government-sponsored benefits for parents, which currently have restrictive eligibility that limits or excludes claimants’ access. Key words: Emigration and immigration; postpartum women; access to health care; refugees
- Published
- 2011
30. Glossary: migration and health
- Author
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Anita J. Gagnon and Marcelo L. Urquia
- Subjects
Gerontology ,Internationality ,Glossary ,Epidemiology ,business.industry ,Health Status ,Field (Bourdieu) ,Public Health, Environmental and Occupational Health ,MEDLINE ,social sciences ,Emigration and Immigration ,Acculturation ,Terminology ,behavior and behavior mechanisms ,Humans ,Medicine ,Narrative review ,Social science ,business - Abstract
The literature on migration and health is quite heterogeneous in how migrants are labelled and how the relation between migration and health is conceptualised. A narrative review has been carried out. This glossary presents the most commonly used terms in the field of migration and health, along with synonyms and related concepts, and discusses the suitability of their use in epidemiological studies. The terminology used in migrant health is ambiguous in many cases. Studies on migrant health should avoid layman terms and strive to use internationally defined concepts.
- Published
- 2011
31. PND88 - DESCRIBING REAL WORLD TREATMENT PATTERNS IN PAEDIATRIC DRAVET SYNDROME PATIENTS IN DENMARK USING ELECTRONIC MEDICAL RECORDS
- Author
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M Nikanorova, RS Møller, J Irwin, J Gagnon, D Marjanovic, A Kumar, M. Busch-Sørensen, and J Taylor
- Subjects
Pediatrics ,medicine.medical_specialty ,Dravet syndrome ,business.industry ,Health Policy ,Medical record ,Public Health, Environmental and Occupational Health ,medicine ,medicine.disease ,business - Published
- 2018
32. PRM47 - UNDERSTANDING KEY VALUE DRIVERS OF A NOVEL TREATMENT IN MANAGEMENT OF FAMILIAL CHYLOMICRONEMIA SYNDROME
- Author
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A. Kumar, G.A. Phillips, E. Priedane, S. Hurst, and J Gagnon
- Subjects
Gerontology ,business.industry ,Health Policy ,Public Health, Environmental and Occupational Health ,Key (cryptography) ,Medicine ,Familial Chylomicronemia ,business ,Value drivers - Published
- 2018
33. Strengthening data quality in studies of migrants not fluent in host languages: A canadian example with reproductive health questionnaires
- Author
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Lisa Merry, Fay J. Strohschein, Anita J. Gagnon, and Julia Thomas
- Subjects
Canada ,Health Knowledge, Attitudes, Practice ,Refugee ,Foreign language ,Population ,Sexually Transmitted Diseases ,HIV Infections ,law.invention ,Fluency ,law ,Surveys and Questionnaires ,Humans ,Medicine ,education ,General Nursing ,Language ,Reproductive health ,Refugees ,Communication ,Medical education ,education.field_of_study ,business.industry ,Communication Barriers ,Health Surveys ,language.human_language ,Test (assessment) ,Tamil ,CLARITY ,language ,Female ,business - Abstract
The need to collect health data from refugees and asylum seekers often requires that questionnaires be translated. Verifying the clarity, meaning, and acceptability of translated questionnaires with monolingual persons, individuals from the target population who primarily speak and understand only the test language, is one important step in the translation process. Reproductive health questionnaires were tested with persons monolingual in Hindi, Tamil, Urdu, Spanish, and French. Testing revealed problematic questions and how culture, education, and migration experience can affect perceptions of questions. Bilingual liaisons from the communities of interest facilitated recruitment of participants, but liaisons' vulnerable status and lack of familiarity with research posed challenges to the testing process. When conducting monolingual testing it is important to: carefully select liaisons (consider their gender, host-language fluency, knowledge of research processes, and comfort with the subject matter of the research); recruit monolingual persons with characteristics representative of the research population; ensure adequate researcher involvement in all aspects of the testing process to triangulate data collection from various sources.
- Published
- 2010
34. A Comparison of Low Birth Weight Among Newborns of Early Adolescents, Late Adolescents, and Adult Mothers in the Peruvian Amazon
- Author
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Eder Aguilar, Martin Casapia, Amee R. Manges, Serene A. Joseph, Anita J. Gagnon, Elham Rahme, Theresa W. Gyorkos, Hermánn Silva, and Julia A. Ryan
- Subjects
Adult ,Male ,medicine.medical_specialty ,Time Factors ,Adolescent ,Epidemiology ,Cross-sectional study ,Birth weight ,Population ,Mothers ,Adolescent age ,Young Adult ,Pregnancy ,Risk Factors ,Peru ,Confidence Intervals ,Odds Ratio ,Humans ,Medicine ,Child ,education ,Maternal Welfare ,education.field_of_study ,business.industry ,Obstetrics ,Infant, Newborn ,Pregnancy Outcome ,Public Health, Environmental and Occupational Health ,Obstetrics and Gynecology ,Gestational age ,Health Status Disparities ,Infant, Low Birth Weight ,medicine.disease ,Low birth weight ,Cross-Sectional Studies ,Logistic Models ,Pediatrics, Perinatology and Child Health ,Female ,Reproductive Health Services ,medicine.symptom ,Live birth ,business ,Maternal Age - Abstract
To compare low birth weight (LBW
- Published
- 2010
35. Refugee maternal and perinatal health in Ontario, Canada: a retrospective population-based study
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Rahim Moineddin, Meb Rashid, Parisa Dastoori, Anita J. Gagnon, Donald C. Cole, Jennifer Blake, Marcelo L. Urquia, Joel G. Ray, Susitha Wanigaratne, and Yogendra Shakya
- Subjects
Canada ,medicine.medical_specialty ,Maternal Health ,medicine.medical_treatment ,Refugee ,media_common.quotation_subject ,Immigration ,Population ,Emigrants and Immigrants ,social medicine ,03 medical and health sciences ,perinatology ,0302 clinical medicine ,Pregnancy ,Epidemiology ,Health care ,medicine ,Humans ,Caesarean section ,030212 general & internal medicine ,education ,Retrospective Studies ,media_common ,Ontario ,Refugees ,maternal medicine ,education.field_of_study ,030219 obstetrics & reproductive medicine ,Cesarean Section ,business.industry ,Research ,Public health ,fungi ,Infant, Newborn ,Pregnancy Outcome ,food and beverages ,General Medicine ,3. Good health ,Cohort ,Female ,epidemiology ,Public Health ,business ,Demography - Abstract
Objectives Immigrants are thought to be healthier than their native-born counterparts, but less is known about the health of refugees or forced migrants. Previous studies often equate refugee status with immigration status or country of birth (COB) and none have compared refugee to non-refugee immigrants from the same COB. Herein, we examined whether: (1) a refugee mother experiences greater odds of adverse maternal and perinatal health outcomes compared with a similar non-refugee mother from the same COB and (2) refugee and non-refugee immigrants differ from Canadian-born mothers for maternal and perinatal outcomes. Design This is a retrospective population-based database study. We implemented two cohort designs: (1) 1:1 matching of refugees to non-refugee immigrants on COB, year and age at arrival (±5 years) and (2) an unmatched design using all data. Setting and participants Refugee immigrant mothers (n=34 233), non-refugee immigrant mothers (n=243 439) and Canadian-born mothers (n=615 394) eligible for universal healthcare insurance who had a hospital birth in Ontario, Canada, between 2002 and 2014. Primary outcomes Numerous adverse maternal and perinatal health outcomes. Results Refugees differed from non-refugee immigrants most notably for HIV, with respective rates of 0.39% and 0.20% and an adjusted OR (AOR) of 1.82 (95% CI 1.19 to 2.79). Other elevated outcomes included caesarean section (AOR 1.04, 95% CI 1.00 to 1.08) and moderate preterm birth (AOR 1.08, 95% CI 0.99 to 1.17). For the majority of outcomes, refugee and non-refugee immigrants experienced similar AORs when compared with Canadian-born mothers. Conclusions Refugee status was associated with a few adverse maternal and perinatal health outcomes, but the associations were not strong except for HIV. The definition of refugee status used herein may not sensitively identify refugees at highest risk. Future research would benefit from further refining refugee status based on migration experiences.
- Published
- 2018
36. 0272 Thinning of Medial Frontal and Anterior Cingulate Cortices Explain Age-related Changes in REM and NREM Sleep
- Author
-
M Gaubert, J Gagnon, Véronique Latreille, Jonathan Dubé, Jean-Marc Lina, and Julie Carrier
- Subjects
Anterior cingulate gyrus ,Thinning ,business.industry ,Physiology (medical) ,Age related ,Medicine ,Neurology (clinical) ,business ,Proxy (statistics) ,Non-rapid eye movement sleep ,Neuroscience - Published
- 2018
37. South Asian migrant women and HIV/STIs: Knowledge, attitudes and practices and the role of sexual power
- Author
-
Anita J. Gagnon, Lisa Merry, Ellen Rosenberg, Jacqueline Bocking, and Jacqueline Oxman-Martinez
- Subjects
Adult ,Male ,Health Knowledge, Attitudes, Practice ,Asia ,Health (social science) ,South asia ,media_common.quotation_subject ,Decision Making ,Geography, Planning and Development ,Immigration ,Population ,Sexually Transmitted Diseases ,HIV Infections ,urologic and male genital diseases ,Affect (psychology) ,Power (social and political) ,Acquired immunodeficiency syndrome (AIDS) ,Surveys and Questionnaires ,Asia, Western ,Humans ,Medicine ,education ,Health Education ,media_common ,Transients and Migrants ,education.field_of_study ,business.industry ,Quebec ,Public Health, Environmental and Occupational Health ,virus diseases ,medicine.disease ,Female ,Health education ,Power, Psychological ,business ,Developed country ,geographic locations ,Demography - Abstract
Differences in relationship power dynamics or migration factors may affect knowledge, attitudes, and practices (KAP) towards HIV/AIDS and sexually transmitted infections (STIs) in resettling Migrant women. A sample of 122 women and men born in India, Sri Lanka, Pakistan or Bangladesh and residing in Montreal completed questionnaires on HIV/STI KAP and decision-making power Within sexual relationships. Knowledge gaps and stigmatizing attitudes were found. STI/HIV information available in one's language and other educational strategies that consider women's Power may improve KAP among South Asian migrant women.
- Published
- 2010
38. Ros-mediated activation of NF-κB and Foxo during muscle disuse
- Author
-
Sarah M. Senf, Brittany J. Gagnon, Stephen L. Dodd, Andrew Judge, and Brian A. Hain
- Subjects
Soleus muscle ,medicine.medical_specialty ,Physiology ,Skeletal muscle ,Biology ,medicine.disease ,medicine.disease_cause ,Muscle atrophy ,Cellular and Molecular Neuroscience ,Enzyme activator ,Transactivation ,Atrophy ,Endocrinology ,medicine.anatomical_structure ,Catalase ,Physiology (medical) ,Internal medicine ,medicine ,biology.protein ,Neurology (clinical) ,medicine.symptom ,Oxidative stress - Abstract
We examined reactive oxygen species as upstream activators of nuclear factor kappaB; (NF-kappaB) and forkhead box O (Foxo) in skeletal muscle during disuse atrophy. Catalase, an enzyme that degrades H2O2, was overexpressed in soleus muscles via plasmid injection prior to 7 days of hindlimb immobilization. The increased catalase activity abolished immobilization-induced transactivation of both NF-kappaB and Foxo and attenuated the loss of muscle mass. Thus, H2O2 may be an important initiator of these signaling pathways that lead to muscle atrophy.
- Published
- 2009
39. Targeted In vivo Imaging of Integrin αvβ6 with an Improved Radiotracer and Its Relevance in a Pancreatic Tumor Model
- Author
-
Jan Marik, Craig K. Abbey, Sven H. Hausner, Julie L. Sutcliffe, Cathy E. Stanecki, Richard J. Bold, John Marshall, and M. Karen J. Gagnon
- Subjects
Male ,Fluorine Radioisotopes ,Integrins ,Cancer Research ,Pathology ,medicine.medical_specialty ,Pancreatic disease ,Transplantation, Heterologous ,Melanoma, Experimental ,Alpha (ethology) ,Enzyme-Linked Immunosorbent Assay ,Benzoates ,Article ,Flow cytometry ,Mice ,Viral Proteins ,Antigens, Neoplasm ,In vivo ,Pancreatic tumor ,Cell Line, Tumor ,Animals ,Humans ,Medicine ,Tissue Distribution ,Beta (finance) ,medicine.diagnostic_test ,business.industry ,Flow Cytometry ,medicine.disease ,Pancreatic Neoplasms ,Transplantation ,Oncology ,Foot-and-Mouth Disease Virus ,Positron-Emission Tomography ,Cancer research ,Feasibility Studies ,Radiopharmaceuticals ,business ,Neoplasm Transplantation ,Preclinical imaging ,Protein Binding - Abstract
The cell surface receptor αvβ6 is epithelial specific, and its expression is tightly regulated; it is low or undetectable in adult tissues but has been shown to be increased in many different cancers, including pancreatic, cervical, lung, and colon cancers. Studies have described αvβ6 as a prognostic biomarker linked to poor survival. We have recently shown the feasibility of imaging αvβ6 in vivo by positron emission tomography (PET) using the peptide [18F]FBA-A20FMDV2. Here, we describe improved αvβ6 imaging agents and test their efficacy in a mouse model with endogenous αvβ6 expression. The modified compounds maintained high affinity for αvβ6 and >1,000-fold selectivity over related integrins (by ELISA) and showed significantly improved αvβ6-dependent binding in cell-based assays (>60% binding versus 23:1 and >47:1, respectively, were achieved at 4 hours. Significantly, [18F]FBA-PEG28-A20FMDV2 was superior to 2-[18F]fluoro-2-deoxy-d-glucose ([18F]FDG) in imaging the BxPC-3 tumors. Pancreatic ductal adenocarcinoma is highly metastatic and current preoperative evaluation of resectability using noninvasive imaging has limited success, with most patients having metastases at time of surgery. The fact that these tumors express αvβ6 suggests that this probe has significant potential for the in vivo detection of this malignancy, thus having important implications for patient care and therapy. [Cancer Res 2009;69(14):5843–50]
- Published
- 2009
40. Do Referrals Work? Responses of Childbearing Newcomers to Referrals for Care
- Author
-
Christina Clausen, Anita J. Gagnon, J. F. Saucier, Franco A. Carnevale, J. Jeannotte, and Jacqueline Oxman-Martinez
- Subjects
Adult ,medicine.medical_specialty ,National Health Programs ,Referral ,Epidemiology ,media_common.quotation_subject ,Refugee ,Immigration ,Population ,Emigrants and Immigrants ,Language barrier ,Interviews as Topic ,Nursing ,Pregnancy ,Health care ,medicine ,Humans ,Maternal Health Services ,education ,Referral and Consultation ,media_common ,Refugees ,education.field_of_study ,business.industry ,Public health ,Quebec ,Public Health, Environmental and Occupational Health ,Family medicine ,Facilitator ,Female ,business - Abstract
Background Health care post-birth may include referrals for additional care. Migrant (i.e., refugee, asylum-seeker, and immigrant) women frequently do not follow-up referrals for care and could be at increased health risk as a consequence. We sought to explore the inhibitors and facilitators of migrant women for following through with referrals for care. Methods Twenty-five women living in Montreal who had received a referral completed semi-structured interviews. Results Inhibitors included language barriers, transportation problems, scheduling appointments, absence of husband, absence of childcare, cold weather, perceived inappropriate referrals, and cultural practice differences. Facilitators included choice of follow-up facilitator, appropriate services, empathetic professionals, and early receipt of information. Discussion Results indicate that migrant women may not be receiving the care they and their newborns need once a concern is identified. This suggests conceiving of a different approach to the care of this population post-birth, which could include partnering with social or religious networks.
- Published
- 2009
41. TREATMENT OF CHORDOMAS WITH CYBERKNIFE
- Author
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Fraser Henderson, Gregory J. Gagnon, Juliet Seigle, William Harter, Walter C. Jean, and Kyle McCool
- Subjects
Adult ,Male ,medicine.medical_specialty ,Universities ,medicine.medical_treatment ,Pain ,Kaplan-Meier Estimate ,Radiosurgery ,Central Nervous System Neoplasms ,Postoperative Complications ,Quality of life ,Cyberknife ,Statistical significance ,Chordoma ,medicine ,Humans ,Disseminated disease ,Aged ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Dose fractionation ,Magnetic resonance imaging ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,Surgery ,Treatment Outcome ,Quality of Life ,Female ,Dose Fractionation, Radiation ,Neurology (clinical) ,business - Abstract
OBJECTIVE: To determine the efficacy and safety of chordoma treatment with CyberKnife (Accuray, Inc., Sunnyvale, CA) stereotactic radiosurgery (CK/SRS). METHODS: Eighteen patients with chordoma were treated with CK/SRS as a primary adjuvant (17 patients) or the only treatment (1 patient). The series included 24 lesions (28 treatments). The median age of the patients was 60 years (range, 24-85 years). Forty-four percent of the tumors were located in the mobile spine, 39% inside the cranium, and 17% in the sacral region. The male-to-female ratio was 1:1. The mean tumor volume was 128.0 mL (range, 12.0-457.3 mL), and the median dose of 35 Gy (range, 24.0-40.0 Gy) was delivered in 5 sessions. The median follow-up period was 46 months (range, 7-65 months). RESULTS: There were 3 significant complications in patients with previous irradiation, including infection in the surgical/radiation site (2 patients) and decreased vision (1 patient). Improvement in pain and quality of life did not reach statistical significance (alpha = 0.05). Seven patients experienced recurrence at a median of 10 months (range, 5-38 months), and 4 patients with disseminated disease died 7 to 48 months after therapy. Two patients had a partial response, whereas 9 others had stable disease. The local control rate at 65 months was 59.1%, with an overall survival of 74.3% and disease-specific survival of 88.9%. We estimated an alpha/beta ratio of 2.45 for chordomas, which supports hypofractionation. CONCLUSION: The CK/SRS safety and efficacy profile compares favorably with those of other treatment delivery systems. CK/SRS appears to reduce tumor volume, given an adequate dose. The authors recommend treatment with 40 Gy in 5 sessions to the clinical treatment volume, which includes the gross tumor volume and at least a 1-cm margin.
- Published
- 2009
42. Stillbirths and infant deaths among migrants in industrialized countries
- Author
-
Jennifer Zeitlin, Babill Stray-Pedersen, Mika Gissler, Alison Macfarlane, Anita J. Gagnon, Megan Zimbeck, Rhonda Small, and Sophie Alexander
- Subjects
medicine.medical_specialty ,Pediatrics ,Refugee ,Pregnancy ,Cause of Death ,Infant Mortality ,Epidemiology ,medicine ,Humans ,Cause of death ,Transients and Migrants ,Refugees ,business.industry ,Developed Countries ,Public health ,Infant, Newborn ,Infant ,Obstetrics and Gynecology ,General Medicine ,Stillbirth ,medicine.disease ,female genital diseases and pregnancy complications ,Infant mortality ,Systematic review ,population characteristics ,Female ,business ,Developed country ,Demography - Abstract
The relation of migration to infant outcomes is unclear. There are studies which show that some migrant groups have similar or even better outcomes than those from the receiving country. Equally, raised risk of adverse outcomes for other migrant groups has been reported.We sought to determine (1) if migrants in western industrialized countries have consistently higher risks of stillbirth, neonatal mortality, or infant mortality, (2) if there are migrant sub-groups at potentially higher risk, and (3) what might be the explanations for any risk differences found.Systematic review of the literature on perinatal health outcomes among migrants in western industrialized countries.Drawing on a larger systematic review of perinatal outcomes and migration, we reviewed studies including mortality outcomes (stillbirths and infant deaths).Eligible studies gave conflicting results. Half (53%) reported worse mortality outcomes, one third (35%) reported no differences and a few (13%) reported better outcomes for births to migrants compared to the receiving country population. Refugees were the most vulnerable group. For non-refugees, non-European migrants in Europe and foreign-born blacks in the United States had the highest excess mortality. In general, adjustment of background factors did not explain the increased mortality rate among migrants. Regarding causes of death, higher preterm birth rates explained the increased mortality figures among some migrant groups. The increased mortality from congenital anomalies may be related to restricted access to screening, but also to differing attitudes to screening and termination of pregnancy.Mortality risk among babies born to migrants is not consistently higher, but appears to be greatest among refugees, non-European migrants to Europe, and foreign-born blacks in the US. To understand this variation better, more information is needed about migrant background, such as length of time in receiving country and receiving country language fluency. Additional data on demographic, health care, biological, medical, and socioeconomic risk factors should be gathered and analyzed in greater detail.
- Published
- 2009
43. Somali women and their pregnancy outcomes postmigration: data from six receiving countries
- Author
-
Jennifer Zeitlin, Guy Martens, Richard H. Glazier, Sarah McDermott, Edwige Haelterman, Siri Vangen, Marcelo L. Urquia, Rhonda Small, Mika Gissler, M. Bennis, and Anita J. Gagnon
- Subjects
Obstétrique ,Epidemiology ,pregnancy outcomes ,medicine.medical_treatment ,migration ,Somali ,Gynécologie ,0302 clinical medicine ,Pregnancy ,Risk Factors ,Infant Mortality ,Caesarean section ,030212 general & internal medicine ,Young adult ,Migration ,030219 obstetrics & reproductive medicine ,Obstetrics ,Pregnancy Outcome ,Obstetrics and Gynecology ,Stillbirth ,Emigration and Immigration ,Europe ,Premature birth ,Meta-analysis ,language ,Premature Birth ,Gestation ,stillbirth ,Female ,Maternal Age ,Adult ,Canada ,medicine.medical_specialty ,Somalia ,Young Adult ,03 medical and health sciences ,medicine ,Humans ,Pregnancy outcomes ,business.industry ,Australia ,Infant, Newborn ,Delivery, Obstetric ,medicine.disease ,language.human_language ,Infant mortality ,business - Abstract
Objective: This study aimed to investigate pregnancy outcomes in Somali-born women compared with those women born in each of the six receiving countries: Australia, Belgium, Canada, Finland, Norway and Sweden. Design: Meta-analyses of routinely collected data on confinements and births. Setting: National or regional perinatal datasets spanning 3-6 years between 1997 and 2004 from six countries. Sample: A total of 10 431 Somali-born women and 2 168 891 receiving country-born women. Methods: Meta-analyses to compare outcomes for Somali-born and receiving country-born women across the six countries. Main outcome measures: Events of labour (induction, epidural use and proportion of women using no analgesia), mode of birth (spontaneous vaginal birth, operative vaginal birth and caesarean section) and infant outcomes (preterm birth, birthweight, Apgar at 5 minutes, stillbirths and neonatal deaths). Results: Compared with receiving country-born women, Somali-born women were less likely to give birth preterm (pooled OR 0.72, 95% CI 0.64-0.81) or to have infants of low birthweight (pooled OR 0.89, 95% CI 0.82-0.98), but there was an excess of caesarean sections, particularly in first births (pooled OR 1.41, 95% CI 1.25-1.59) and an excess of stillbirths (pooled OR 1.86, 95% CI 1.38-2.51). Conclusions: This analysis has identified a number of disparities in outcomes between Somali-born women and their receiving country counterparts. The disparities are not readily explained and they raise concerns about the provision of maternity care for Somali women postmigration. Review of maternity care practices followed by implementation and careful evaluation of strategies to improve both care and outcomes for Somali women is needed. © 2008 The Authors., SCOPUS: ar.j, FLWOA, info:eu-repo/semantics/published
- Published
- 2008
44. In Vivo Positron Emission Tomography (PET) Imaging with an αvβ6 Specific Peptide Radiolabeled using 18F-'Click' Chemistry: Evaluation and Comparison with the Corresponding 4-[18F]Fluorobenzoyl- and 2-[18F]Fluoropropionyl-Peptides
- Author
-
Jan Marik, Sven H. Hausner, Julie L. Sutcliffe, and M. Karen J. Gagnon
- Subjects
chemistry.chemical_classification ,Biodistribution ,medicine.diagnostic_test ,Chemistry ,Radiochemistry ,Tumor cells ,Peptide ,Pet imaging ,digestive system ,Biochemistry ,In vivo ,Positron emission tomography ,Drug Discovery ,Click chemistry ,medicine ,Molecular Medicine ,Preclinical imaging - Abstract
Numerous radiolabeled peptides have been utilized for in vivo imaging of a variety of cell surface receptors. For applications in PET using [18F]fluorine, peptides are radiolabeled via a prosthetic group approach. We previously developed solution-phase 18F-“click” radiolabeling and solid-phase radiolabeling using 4-[18F]fluorobenzoic and 2-[18F]fluoropropionic acids. Here we compare the three different radiolabeling approaches and report the effects on PET imaging and pharmacokinetics. The prosthetic groups did have an effect; metabolites with significantly different polarities were observed.
- Published
- 2008
45. One-on-One Coaching to Improve Pain Assessment and Management Practices of Pediatric Nurses
- Author
-
Francoise Filion, Carla Shapiro, Jasmine Byron, Jaqueline Ellis, Hélène Patenaude, Judith A. Ritchie, Anita J. Gagnon, Celeste Johnston, Janet E. Rennick, and Christina Rosmus
- Subjects
Adult ,Canada ,Health Knowledge, Attitudes, Practice ,medicine.medical_specialty ,Attitude of Health Personnel ,Feedback, Psychological ,Interprofessional Relations ,education ,Psychological intervention ,Pain ,Context (language use) ,Audit ,Nursing Staff, Hospital ,Nurse's Role ,Pediatrics ,Coaching ,Social support ,Education, Nursing, Continuing ,Nursing ,Pain assessment ,Health care ,Humans ,Medicine ,Single-Blind Method ,Child ,Nursing Assessment ,Pain Measurement ,business.industry ,Nursing Audit ,Social Support ,Pediatric Nursing ,Nursing Education Research ,Nursing Evaluation Research ,Family medicine ,Preceptorship ,Clinical Competence ,business ,human activities ,Total Quality Management - Abstract
Pain in children is infrequently assessed and managed by nurses. One-on-one coaching based on audit with feedback and the use of opinion leaders have been effective in changing professional health care practices. Coaching by an opinion leader for changing pediatric nurses' pain practices was tested in a clustered randomized trial in six Canadian pediatric hospitals. The rate of pain assessments, nurses' knowledge, and nonpharmacological interventions increased in the coaching group. However, there were significant site differences that could not be attributed to the coaching but to factors inherent in the sites. The context in which interventions are implemented will influence the effectiveness of individualized interventions.
- Published
- 2007
46. Cyberknife radiosurgery for breast cancer spine metastases
- Author
-
Edmund A. Gehan, Jefferson Moulds, Anatoly Dritschilo, Fraser Henderson, Gregory J. Gagnon, Donna Sanford, and Brian T. Collins
- Subjects
Cancer Research ,medicine.medical_specialty ,Matched-Pair Analysis ,medicine.medical_treatment ,Breast Neoplasms ,Radiation Dosage ,Radiosurgery ,Metastasis ,Postoperative Complications ,Breast cancer ,Cyberknife ,medicine ,Humans ,External beam radiotherapy ,Aged ,Spinal Neoplasms ,Performance status ,business.industry ,Middle Aged ,Prognosis ,medicine.disease ,Surgery ,Survival Rate ,Radiation therapy ,Treatment Outcome ,Oncology ,Case-Control Studies ,Female ,CyberKnife Radiosurgery ,business - Abstract
BACKGROUND. There are few options for breast cancer patients with spinal metastases recurrent within a previous radiation treatment field. CyberKnife radiosurgery has been used in our institution to treat such patients. To evaluate their outcomes, as there are no comparable radiation treatment options, the outcomes were compared between 18 patients with spinal metastases from breast cancer treated with CyberKnife stereotactic radiosurgery, 17 of which had prior radiotherapy to the involved spinal region and were progressing, and 18 matched patients who received conventional external beam radiotherapy (CRT) up-front for spinal metastases. METHODS. Radiosurgery was delivered in 3 to 5 fractions to doses ranging from 2100 to 2800 cGy. Women were matched to patients in a CRT group with respect to time from original diagnosis to diagnosis of metastases, estrogen receptor / progesterone receptor (ER/PR) status, presence or absence of visceral metastases, prior radiotherapy, and prior chemotherapy. Survival and complications were compared between treatment groups. Surviving patients were followed out to 24 months. RESULTS. The CyberKnife and CRT groups were comparable along all matching dimensions and in performance status before treatment. Outcomes of treatment were similar for patients in both groups; ambulation, performance status, and pain worsened similarly across groups posttreatment. Survival and the number of complications appeared to favor the CyberKnife group, but the differences did not reach statistical significance. CONCLUSIONS. The statistical comparability of the CyberKnife and CRT groups reflects the small sample size and stringent requirements for significance of the matched-pair analysis. Nevertheless, comparability in these difficult cases shows that salvage CyberKnife treatment is as efficacious as initial CRT without added toxicity. Cancer 2007. © 2007 American Cancer Society.
- Published
- 2007
47. Complications of Thoracic Computed Tomography–Guided Fiducial Placement for the Purpose of Stereotactic Body Radiation Therapy
- Author
-
Carlos Jamis-Dow, Cristina A. Reichner, Blair Marshall, Gregory J. Gagnon, Brian T. Collins, Thomas Chang, Shakun Malik, Eric D. Anderson, Shadi Yousefi, and Filip Banovac
- Subjects
Adult ,Male ,Pulmonary and Respiratory Medicine ,Cancer Research ,medicine.medical_specialty ,Lung Neoplasms ,Percutaneous ,Radiography ,Radiosurgery ,Cyberknife ,Biopsy ,medicine ,Humans ,Aged ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Pneumothorax ,Middle Aged ,medicine.disease ,Thoracostomy ,Oncology ,Concomitant ,Female ,Radiography, Thoracic ,Radiology ,Tomography, X-Ray Computed ,business ,Fiducial marker - Abstract
Purpose This study examined the complication rates associated with percutaneous fiducial placement for the purpose of stereotactic body radiation therapy of primary and metastatic lung neoplasms. Patients and Methods This is a retrospective review of computed tomography (CT) scans and follow-up chest radiographs of 48 consecutive patients who underwent CT-guided percutaneous fiducial placement. The effect of age, sex, number of fiducials placed, and performance of a concomitant biopsy on the complication rates were assessed. Results Of 48 patients with a total of 221 fiducials placed, 16 (33%) had a procedure-related pneumothorax. There was no significant difference in pneumothorax rate based on age ( P = 0.16), sex ( P > 0.99), and number of fiducials placed ( P = 0.21). Overall, 6 of 48 patients (12.5%) required a thoracostomy tube. Performance of a concomitant core needle biopsy at the time of fiducial placement was associated with pneumothorax rates of 64% compared with 26% without biopsies ( P = 0.03). Postprocedural CT demonstrated hemorrhage in 9 patients (19%). Two patients had hemoptysis; one required admission. Patients' age, sex, number of fiducials placed, and performance of concomitant biopsy had no statistically significant implications on parenchymal hemorrhage incidence. Conclusion Approximately one third of the patients develop a pneumothorax during CT-guided fiducial placement. Most are asymptomatic and do not require a thoracostomy. A concurrent biopsy at the time of fiducial placement is associated with an increased risk of pneumothorax. Hemorrhage occurs but is usually clinically insignificant.
- Published
- 2007
48. Prevalence, continuation, and identification of postpartum depressive symptomatology among refugee, asylum-seeking, non-refugee immigrant, and Canadian-born women: results from a prospective cohort study
- Author
-
Lisa Merry, Cindy-Lee Dennis, Donna E. Stewart, and Anita J. Gagnon
- Subjects
Postpartum depression ,Predictive validity ,Adult ,medicine.medical_specialty ,Canada ,media_common.quotation_subject ,Refugee ,Immigration ,Emigrants and Immigrants ,Sensitivity and Specificity ,Depressive symptomatology ,Cohort Studies ,Depression, Postpartum ,03 medical and health sciences ,0302 clinical medicine ,Population Groups ,Predictive Value of Tests ,Pregnancy ,Early Medical Intervention ,medicine ,Prevalence ,Humans ,030212 general & internal medicine ,Prospective Studies ,Psychiatry ,Prospective cohort study ,media_common ,Psychiatric Status Rating Scales ,Refugees ,business.industry ,fungi ,food and beverages ,Obstetrics and Gynecology ,medicine.disease ,030227 psychiatry ,3. Good health ,Psychiatry and Mental health ,Early Diagnosis ,Edinburgh Postnatal Depression Scale ,Female ,business ,Postpartum period ,Needs Assessment ,Demography - Abstract
This study assessed the prevalence, continuation, and identification of maternal depressive symptomatology over the first 16 weeks postpartum among refugee, asylum-seeking, non-refugee immigrant, and Canadian-born women. A sample of 1125 women (143 refugees, 369 asylum-seekers, 303 non-refugee immigrant, and 310 Canadian-born) completed the Edinburgh Postnatal Depression Scale (EPDS) at 1 and 16 weeks postpartum. The sensitivity, specificity, and predictive power of the 1-week EPDS to identify women with elevated EPDS scores at 16 weeks were determined. The total number of women with EPDS scores9 for each group at 1 and 16 weeks, respectively, was 26.6 and 18.2 % for refugees; 25.2 and 24.1 % for asylum-seekers; 22.4 and 14.2 % for non-refugee immigrants, and 14.8 and 7.4 % for Canadian-born. Using the cut-off score of 9/10, the 1-week EPDS accurately classified 77.6 % refugee, 73.4 % asylum-seeking, 76.6 % non-refugee immigrant, and 85.5 % Canadian-born women at 16 weeks with or without postpartum depressive symptomatology. The 1-week EPDS was significantly correlated to the 16-week EPDS (r = 0.46, p 0.01). All groups were significantly more likely to exhibit depressive symptomatology at 16 weeks if they had EPDS scores9 at 1 week postpartum: refugees (OR = 6.9, 95 % CI = 2.8-17.3), asylum-seekers (OR = 4.0, 95 % CI = 2.4-6.7), non-refugee immigrants (OR = 3.8, 95 % CI = 2.0-7.6), and Canadian-born women (OR = 8.0, 95 % CI = 3.3-19.8). Our findings suggest that refugee, asylum-seeking, non-refugee immigrant, and Canadian-born women at risk of postpartum depression may be identified early in the postpartum period such that secondary preventive interventions may be implemented.
- Published
- 2015
49. Reproductive health research of women migrants to Western countries: A systematic review for refining the clinical lens
- Author
-
Kara L. Redden and Anita J. Gagnon
- Subjects
medicine.medical_specialty ,media_common.quotation_subject ,Developing country ,Emigrants and Immigrants ,03 medical and health sciences ,0302 clinical medicine ,Nursing ,medicine ,Western world ,Humans ,Quality (business) ,030212 general & internal medicine ,Developing Countries ,Reproductive health ,media_common ,030505 public health ,business.industry ,Developed Countries ,Health services research ,Obstetrics and Gynecology ,General Medicine ,Culturally Competent Care ,Additional research ,Reproductive Health ,Family medicine ,Western World ,Female ,Reproductive Health Services ,Health Services Research ,0305 other medical science ,business ,Developed country - Abstract
Influxes of migrant women of childbearing age to Western receiving countries have made their reproductive health a priority in those countries. Yet, providing optimal care to these women may be hampered by an inadequate volume or quality of research to inform practice. We reviewed reports of studies recently published to assess the extent to which current research is able to inform reproductive health care practices for migrant women (i.e., those born in countries other than the receiving country)--in so doing, we sought to offer a view of the landscape from which clinicians may interpret relevant publications. Additionally, we sought to identify topics for which clinicians may choose to advocate for additional research to be performed.
- Published
- 2015
50. Predictors of Emergency Caesarean Births to Low-Risk Migrant Women
- Author
-
William D. Fraser, Theresa W. Gyorkos, Anita J. Gagnon, Lisa Merry, and S Semenic
- Subjects
business.industry ,Public Health, Environmental and Occupational Health ,Medicine ,Emergency caesarean ,Medical emergency ,business ,medicine.disease - Published
- 2015
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