29 results on '"Corkum M"'
Search Results
2. Progress Toward Poliomyelitis Eradication in Nigeria
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Ado, J. M., primary, Etsano, A., additional, Shuaib, F., additional, Damisa, E., additional, Mkanda, P., additional, Gasasira, A., additional, Banda, R., additional, Korir, C., additional, Johnson, T., additional, Dieng, B., additional, Corkum, M., additional, Enemaku, O., additional, Mataruse, N., additional, Ohuabunwo, C., additional, Baig, S., additional, Galway, M., additional, Seaman, V., additional, Wiesen, E., additional, Vertefeuille, J., additional, Ogbuanu, I. U., additional, Armstrong, G., additional, and Mahoney, F. J., additional
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- 2014
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3. Breast and Cervical Cancer Screening Behaviours among Colorectal Cancer Survivors in Nova Scotia
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Corkum, M., primary, Urquhart, R., additional, Kephart, G., additional, Hayden, J.A., additional, and Porter, G., additional
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- 2014
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4. Physiological and ecological responses of marine phytoplankton to natural and experimental CO2 gradients.
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Tortell, P. D., Morel, F., Payne, C., Ditullio, G., Martin, C., Corkum, M., Li, Y., Rost, Bjoern, Trimborn, Scarlett, Riebesell, U., Reinfelder, J., Rau, G., Smith, W., Tortell, P. D., Morel, F., Payne, C., Ditullio, G., Martin, C., Corkum, M., Li, Y., Rost, Bjoern, Trimborn, Scarlett, Riebesell, U., Reinfelder, J., Rau, G., and Smith, W.
- Published
- 2009
5. Effects of flavouring agents on intake of silage by feedlot steers
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Corkum, M. J., primary, Bate, L. A., additional, Lirette, A., additional, and Tennessen, T., additional
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- 1994
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6. Consequences of Reduction of Number of Individual Feeders on Feeding Behaviour and Stress Level of Feedlot Steers
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Corkum, M. J., Bate, L. A., Tennessen, T., and Lirette, A.
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- 1994
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7. Progress Toward Poliomyelitis Eradication - Pakistan, January 2023-June 2024.
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Mbaeyi C, Ul Haq A, Safdar RM, Khan Z, Corkum M, Henderson E, Wadood ZM, Alam MM, and Franka R
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- Pakistan epidemiology, Humans, Child, Preschool, Infant, Population Surveillance, Child, Poliovirus Vaccine, Oral administration & dosage, Poliovirus Vaccines administration & dosage, Poliomyelitis prevention & control, Poliomyelitis epidemiology, Disease Eradication, Immunization Programs, Poliovirus isolation & purification
- Abstract
Since its launch in 1988, the Global Polio Eradication Initiative has made substantial progress toward the eradication of wild poliovirus (WPV), including eradicating two of the three serotypes, and reducing the countries with ongoing endemic transmission of WPV type 1 (WPV1) to just Afghanistan and Pakistan. Both countries are considered a single epidemiologic block. Despite the occurrence of only a single confirmed WPV1 case during the first half of 2023, Pakistan experienced widespread circulation of WPV1 over the subsequent 12 months, specifically in the historical reservoirs of the cities of Karachi, Peshawar, and Quetta. As of June 30, 2024, eight WPV1 cases had been reported in Pakistan in 2024, compared with six reported during all of 2023. These cases, along with more than 300 WPV1-positive environmental surveillance (sewage) samples reported during 2023-2024, indicate that Pakistan is not on track to interrupt WPV1 transmission. The country's complex sociopolitical and security environment continues to pose formidable challenges to poliovirus elimination. To interrupt WPV1 transmission, sustained political commitment to polio eradication, including increased accountability at all levels, would be vital for the polio program. Efforts to systematically track and vaccinate children who are continually missed during polio vaccination activities should be enhanced by better addressing operational issues and the underlying reasons for community resistance to vaccination and vaccine hesitancy., Competing Interests: All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. No potential conflicts of interest were disclosed.
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- 2024
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8. Online Moral Disengagement: An Examination of the Relationships Between Electronic Communication, Cognitive Empathy, and Antisocial Behavior on the Internet.
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Corkum M and Shead NW
- Abstract
A consequence of the proliferation of online communication is the concerning presence of antisocial behavior observed in virtual spaces. Research suggests the cognitive component of empathy is hindered by features of electronic communication which facilitates antisocial behaviors online. Investigations into how features of online communication inhibit cognitive empathy are lacking, and findings on moral disengagement and antisocial behavior have yet to be integrated with studies on cognitive empathy and electronic communication. The current study explores these relationships. One hundred and three undergraduate students completed several measures including the Online Moral Disengagement Scale, Questionnaire of Cognitive and Affective Empathy, and Online Prosocial and Antisocial Behavior Scale. Results showed a positive correlation between compulsive internet use and online moral disengagement, as well as a negative correlation between cognitive empathy and moral disengagement online. It was hypothesized that online moral disengagement would mediate the relation between cognitive empathy and antisocial behavior online but this mediation was not supported. However, a moderated relationship was revealed between cognitive empathy and moral justification, by liberalism. This moderation can be explored further and built upon by future research to deepen our understanding of how political ideology relates to virtual behavior. Furthermore, the findings concerning components of empathy and moral disengagement, and their role within the perpetration of antisocial conduct online, can inform future research as well as interventions focused on fostering prosocial behavior online and curbing cyberaggression., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2023
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9. Ultrahypofractionated Radiotherapy for Localised Prostate Cancer: How Far Can We Go?
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Corkum MT, Achard V, Morton G, and Zilli T
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- Humans, Male, Radiation Dose Hypofractionation, Brachytherapy, Prostatic Neoplasms radiotherapy, Radiosurgery
- Abstract
Following adoption of moderately hypofractionated radiotherapy as a standard for localised prostate cancer, ultrahypofractioned radiotherapy delivered in five to seven fractions is rapidly being embraced by clinical practice and international guidelines. However, the question remains: how low can we go? Can radiotherapy for prostate cancer be delivered in fewer than five fractions? The current review summarises the evidence that radiotherapy for localised prostate cancer can be safely and effectively delivered in fewer than five fractions using high dose rate brachytherapy or stereotactic body radiotherapy. We also discuss important lessons learned from the single-fraction high dose rate brachytherapy experience., (Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2022
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10. Defining radio-recurrent intra-prostatic target volumes using PSMA-targeted PET/CT and multi-parametric MRI.
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Liu W, Fakir H, Randhawa G, Alfano R, Corkum M, Kassam Z, Rachinsky I, Chung HT, Chung P, Loblaw A, Morton G, Sexton T, Kapoor A, Ward A, Zukotynski K, Emmett L, and Bauman G
- Abstract
Purpose: Our purpose was to evaluate intra-prostatic cancer volumes for salvage radiotherapy in men with recurrent prostate cancer confined to the prostate post-primary radiotherapy using mpMRI and 18F-DCFPyL PET/CT (PET)., Methods: Men with biochemical failure post-primary radiotherapy were enrolled in a multi-centre trial investigating mpMRI and PET. All men with isolated intra-prostatic recurrence are included in this secondary analysis. The intra-prostatic gross tumour volume (GTV) was manually delineated on mpMRI and was also delineated on PET using three methods: 1. manually, 2. using a 30% threshold of maximum intra-prostatic standard uptake value (SUVmax), and 3. using a 67% threshold of this SUVmax. Clinical target volumes (CTV) including expansions on each GTV were generated. Conformity indices were performed between the mpMRI CTV and each PET CTV. Correlation with biopsy and clinical outcomes were performed., Results: Of the 36 men included, 30 (83%) had disease in two quadrants or less using the combination of mpMRI and PET. Mean target volume (union of CTV on mpMRI and CTV manually delineated on PET) was 12.2 cc (49% of prostate gland volume). 12/36 (33%) men had a biopsy. Per-patient sensitivity was 91% for mpMRI and 82% for PET., Conclusions: mpMRI and PET provide complementary information for delineation of intra-prostatic recurrent disease. Union of CTV on mpMRI and PET is often less than 50% of the prostate, suggesting this imaging could help define a target for focal salvage therapy., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2021 The Author(s).)
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- 2021
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11. Prostate high dose-rate brachytherapy as monotherapy for prostate cancer: Late toxicity and patient reported outcomes from a randomized phase II clinical trial.
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Corkum M, Loblaw A, Hasan Y, Chung HT, Tseng CL, McGuffin M, Cheung P, Szumacher E, Liu S, Chu W, Zhang L, Mamedov A, and Morton G
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- Humans, Male, Patient Reported Outcome Measures, Quality of Life, Radiotherapy Dosage, Brachytherapy adverse effects, Prostatic Neoplasms radiotherapy
- Abstract
Background and Purpose: Long-term toxicity of high dose-rate brachytherapy as monotherapy for prostate cancer is not well defined. We report late toxicity and health related quality of life (HRQOL) changes from a randomized phase II clinical trial of two different fractionation schemes., Materials and Methods: Eligible patients had NCCN low or intermediate risk prostate cancer. 170 patients were randomized to receive either a single 19 Gy or two-fractions of 13.5 Gy one week apart. Toxicity was measured using Common Terminology for Adverse Events (CTCAE) v4.0, and HRQOL was measured using the Expanded Prostate Index Composite (EPIC)., Results: Median follow-up was 63 months. The 5-year cumulative incidence of Grade 2 or higher genitourinary (GU) and gastrointestinal (GI) toxicity was 62% and 12% in the single-fraction arm, and 47% and 9% in the two-fraction arm, respectively. Grade 3 GU toxicity was only seen in the single fraction arm with a cumulative incidence of 2%. The 5-year prevalence of Grade 2 GU toxicity was 29% and 21%, in the single- and two-fraction arms, respectively, with Grade 2 GI toxicity of 1% and 2%. Beyond the first year, no significant differences in mean urinary HRQOL were seen compared to baseline in the two-fraction arm, in contrast to the single-fraction arm where a decline in urinary HRQOL was seen at 4 and 5 years. Sexual HRQOL was significantly reduced in both treatment arms at all timepoints, with no changes in the bowel domain., Conclusions: HDR monotherapy is well tolerated with minimal impact on HRQOL., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2020 Elsevier B.V. All rights reserved.)
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- 2021
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12. Locally advanced cervical cancer in a transgender man.
- Author
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Beswick A, Corkum M, and D'Souza D
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- Brachytherapy, Chemoradiotherapy, Female, Health Services Accessibility statistics & numerical data, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Papanicolaou Test statistics & numerical data, Treatment Outcome, Uterine Cervical Neoplasms therapy, Early Detection of Cancer statistics & numerical data, Healthcare Disparities statistics & numerical data, Transgender Persons, Uterine Cervical Neoplasms diagnosis
- Abstract
Competing Interests: Competing interests: None declared.
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- 2019
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13. Using the polio programme to deliver primary health care in Nigeria: implementation research.
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Bawa S, McNab C, Nkwogu L, Braka F, Obinya E, Galway M, Mirelman AJ, Hammanyero KI, Safiyanu G, Chukwuji M, Ongwae K, Mkanda P, Corkum M, Hegg L, Tollefson D, Umar S, Audu S, Gunda H, Chinta M, Jean Baptiste AE, Bagana M, and Shuaib F
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- Adolescent, Adult, Child, Preschool, Cross-Sectional Studies, Female, Health Knowledge, Attitudes, Practice, Humans, Immunization statistics & numerical data, Infant, Infant, Newborn, Interviews as Topic, Middle Aged, Mobile Health Units, Nigeria, Poliomyelitis psychology, Random Allocation, Research, Young Adult, Health Services Accessibility statistics & numerical data, Immunization Programs methods, Poliomyelitis prevention & control, Poliovirus Vaccine, Oral administration & dosage, Primary Health Care methods, Primary Health Care statistics & numerical data
- Abstract
Objective: To evaluate a project that integrated essential primary health-care services into the oral polio vaccine programme in hard-to-reach, underserved communities in northern Nigeria., Methods: In 2013, Nigeria's polio emergency operation centre adopted a new approach to rapidly raise polio immunity and reduce newborn, child and maternal morbidity and mortality. We identified, trained and equipped eighty-four mobile health teams to provide free vaccination and primary-care services in 3176 hard-to-reach settlements. We conducted cross-sectional surveys of women of childbearing age in households with children younger than 5 years, in 317 randomly selected settlements, pre- and post-intervention (March 2014 and November 2015, respectively)., Findings: From June 2014 to September 2015 mobile health teams delivered 2 979 408 doses of oral polio vaccine and dewormed 1 562 640 children younger than 5 years old; performed 676 678 antenatal consultations and treated 1 682 671 illnesses in women and children, including pneumonia, diarrhoea and malaria. The baseline survey found that 758 (19.6%) of 3872 children younger than 5 years had routine immunization cards and 690/3872 (17.8%) were fully immunized for their age. The endline survey found 1757/3575 children (49.1%) with routine immunization cards and 1750 (49.0%) fully immunized. Children vaccinated with 3 or more doses of oral polio vaccine increased from 2133 (55.1%) to 2666 (74.6%). Households' use of mobile health services in the previous 6 months increased from 509/1472 (34.6%) to 2060/2426(84.9%)., Conclusion: Integrating routine primary-care services into polio eradication activities in Nigeria resulted in increased coverage for supplemental oral polio vaccine doses and essential maternal, newborn and child health interventions.
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- 2019
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14. Targeting the last polio sanctuaries with Directly Observed Oral Polio Vaccination (DOPV) in northern Nigeria, (2014-2016).
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Korir C, Shuaib F, Adamu U, Bawa S, Musa A, Bashir A, Isiaka A, Ningi A, Warigon C, Richard B, Fiona B, Pascal M, Loveday N, Tegegne SG, Abdul-Aziz M, Suleiman A, Mohammed K, Corkum M, Onoka C, Nsubuga P, Yehualashet YG, Vaz RG, and Alemu W
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- Child, Preschool, Humans, Immunization Schedule, Infant, Nigeria epidemiology, Poliomyelitis epidemiology, Program Evaluation, Immunization statistics & numerical data, Immunization Programs methods, Poliomyelitis prevention & control, Poliovirus Vaccine, Oral administration & dosage
- Abstract
Background: The declaration of poliomyelitis eradication as a programmatic emergency for global public health by the 65th World Health Assembly in 2012 necessitated innovations and strategies to achieve results. Review of the confirmed polio cases in 2013 showed that most of the cases were from non-compliant households, where parents connived with vaccinators to finger mark the children without actually vaccinating the children with oral polio vaccine or children were absent from home at the time of the visit of vaccinators., Methods: We used pre-post design to quantify the outcomes of directly observed vaccination in 90 local government areas from 12 northern Nigeria states at very high risk of polio transmission. The strategy is an intervention, vaccinating children under the direct supervision of an independent supervisor to ensure compliance. Attractive incentives (pluses) were used to make parents willingly submit their children for vaccination or directly attract children to the vaccination teams or post as part of this strategy., Results: There was a steady increase in population immunity in all the 90 DOPV implementing LGAs since the introduction of DOPV in 2013. The number of states in which > 90% of children received > 4 OPV doses increased from 7 in 2013 to 11 states by July 2016. Yobe state reported the highest proportional increase from 75 to 99% by July 2016 (22% increase), while Kano state reported 17% increase, from 82 to 99% by July 2016., Conclusion: Directly observed polio vaccination strategy improved uptake of polio vaccines and population immunity in high-risk areas for polio transmission.
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- 2018
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15. Understanding threats to polio vaccine commitment among caregivers in high-priority areas of Afghanistan: a polling study.
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SteelFisher GK, Blendon RJ, Guirguis S, Lodge W 2nd, Caporello H, Petit V, Coleman M, Williams MR, Parwiz SM, Corkum M, Gardner S, and Ben-Porath EN
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- Adult, Afghanistan, Female, Humans, Interviews as Topic, Male, Middle Aged, Random Allocation, Young Adult, Caregivers psychology, Health Knowledge, Attitudes, Practice, Medication Adherence, Poliomyelitis prevention & control, Poliovirus Vaccines administration & dosage, Vaccination psychology, Vaccination statistics & numerical data
- Abstract
Background: Eradication of poliovirus from endemic countries relies on vaccination of children with oral polio vaccine (OPV) many times a year until the age of 5 years. We aimed to determine caregivers' commitment to OPV in districts of Afghanistan at high risk for polio transmission and to examine what knowledge, attitudes, or experiences could threaten commitment., Methods: We designed and analysed a poll using face-to-face interviews among caregivers of children under 5 years of age. The sample was drawn via a stratified multistage cluster design with random route household selection. We calculated the percentage of committed and uncommitted caregivers. All percentages were weighted. We then compared percentages of uncommitted caregivers among those with varying knowledge, attitudes, and experiences, using logistic regression to control for possible demographic confounders., Findings: Between Dec 19, 2014, and Jan 5, 2015, we interviewed 1980 caregivers, 21% of whom were "uncommitted" to accepting OPV. Multiple measures of knowledge, attitudes, and experiences are associated with lack of commitment. For example, compared with their relevant counterparts, caregivers are more likely to be uncommitted if they did not trust vaccinators "a great deal" (54% vs 9%), if they do not know that polio spreads through contaminated water (41% vs 14%), or if they believe rumours that OPV is not halal (50% vs 21%)., Interpretation: To enhance OPV commitment, it might be useful to consider a multifactorial approach that highlights building trust in vaccinators, providing facts about transmission, sharing positive messages to overcome key rumours, and strengthening community support for vaccination., Funding: Harvard T H Chan School of Public Health and UNICEF., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
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- 2017
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16. Experiences and Lessons From Polio Eradication Applied to Immunization in 10 Focus Countries of the Polio Endgame Strategic Plan.
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van den Ent MMVX, Mallya A, Sandhu H, Anya BP, Yusuf N, Ntakibirora M, Hasman A, Fahmy K, Agbor J, Corkum M, Sumaili K, Siddique AR, Bammeke J, Braka F, Andriamihantanirina R, Ziao AC, Djumo C, Yapi MD, Sosler S, and Eggers R
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- Global Health, Humans, Disease Eradication, Immunization statistics & numerical data, Immunization Programs, Poliomyelitis prevention & control
- Abstract
Nine polio areas of expertise were applied to broader immunization and mother, newborn and child health goals in ten focus countries of the Polio Eradication Endgame Strategic Plan: policy & strategy development, planning, management and oversight (accountability framework), implementation & service delivery, monitoring, communications & community engagement, disease surveillance & data analysis, technical quality & capacity building, and partnerships. Although coverage improvements depend on multiple factors and increased coverage cannot be attributed to the use of polio assets alone, 6 out of the 10 focus countries improved coverage in three doses of diphtheria tetanus pertussis containing vaccine between 2013 and 2015. Government leadership, evidence-based programming, country-driven comprehensive operational annual plans, community partnership and strong accountability systems are critical for all programs and polio eradication has illustrated these can be leveraged to increase immunization coverage and equity and enhance global health security in the focus countries., (© The Author 2017. Published by Oxford University Press for the Infectious Diseases Society of America.)
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- 2017
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17. Use of Dedicated Mobile Teams and Polio Volunteer Community Mobilizers to Increase Access to Zero-Dose Oral Poliovirus Vaccine and Routine Childhood Immunizations in Settlements at High Risk for Polio Transmission in Northern Nigeria.
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Ongwae KM, Bawa SB, Shuaib F, Braka F, Corkum M, and Isa HK
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- Child, Preschool, Humans, Immunization Schedule, Infant, Infant, Newborn, Nigeria, United Nations, Volunteers, World Health Organization, Community Health Workers organization & administration, Disease Eradication methods, Disease Eradication organization & administration, Immunization Programs organization & administration, Poliomyelitis prevention & control, Poliovirus Vaccine, Oral administration & dosage
- Abstract
Background: The Polio Eradication Initiative in Nigeria, which started >20 years ago, faced many challenges, including initial denial, resistance from communities, and prolonged regional safety concerns. These challenges led into the structuring of the response including the development of the National Emergency Action Plan, improved partner coordination and government engagement, and the establishment of a Polio Emergency Operations Centre. Although monthly supplementary immunization activities (SIAs) continued, the targeting of settlements at high risk for polio transmission with routine immunization (RI) and other selected primary healthcare (PHC) services using dedicated mobile teams and volunteer community mobilizers (VCMs) became a key strategy for interrupting polio transmission in the high-risk areas. These efforts could have contributed to the wild poliovirus-free 2-year period between 24 July 2014 and 11 August 2016, when 2 cases of the virus were reported from Borno State, Northern Nigeria., Methods: A narrative analysis of polio-related program and other official documents was conducted to identify the relevant human resources and their role in the Polio Eradication Initiative and in RI. The data used in the article was obtained from United Nations Children's Fund (UNICEF) and World Health Organization project reports and a draft evaluation report of the dedicated mobile teams approach in Northern Nigeria., Results: The data from 6 of the states that commenced the provision of polio, RI, and other selected PHC services using the dedicated mobile teams approach in 2014 showed an overall increase in the percentage of children aged 12-23 months in the settlements at high risk for polio transmission with a RI card seen, from 23% to 56%, and an overall increase in fully immunized children aged 12-23 months, from 19% to 55%. The number of newborns given the first dose of oral poliovirus vaccine (OPV) according to the RI schedule and the number of children given zero-dose OPV with the assistance of the VCMs similarly increased between 2013 and 2015. In 2015, VCMs helped track 167 092 newborns and also linked 156 537 infants aged <1 year to RI services in the 6 states., Conclusions: The analysis illustrates that polio personnel in Northern Nigeria are used in increasing access to zero-dose OPV, RI, and selected PHC services. The increase in the services generated represented the increasing role of the dedicated mobile teams and polio VCMs in strengthening RI., (© The Author 2017. Published by Oxford University Press for the Infectious Diseases Society of America.)
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- 2017
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18. Reducing resistance to polio immunisation with free health camps and Bluetooth messaging: An update from Kaduna, Northern, Nigeria.
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Birukila G, Babale SM, Epstein H, Gugong V, Anger R, Corkum M, Jehoshaphat Nebanat A, Musoke F, and Alabi O
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- Adolescent, Adult, Aged, Cell Phone statistics & numerical data, Child, Child, Preschool, Community Health Workers trends, Comorbidity, Educational Status, Female, Health Promotion methods, Health Promotion statistics & numerical data, Humans, Immunization Programs methods, Immunization Programs statistics & numerical data, Infant, Infant, Newborn, Male, Marital Status, Middle Aged, Multimedia, National Health Programs organization & administration, National Health Programs statistics & numerical data, Nigeria, Patient Acceptance of Health Care statistics & numerical data, Poliomyelitis immunology, Poliovirus Vaccines administration & dosage, Poliovirus Vaccines supply & distribution, Young Adult, Attitude to Health, Community Health Workers organization & administration, Health Promotion organization & administration, Immunization Programs organization & administration, Patient Acceptance of Health Care psychology, Poliomyelitis prevention & control
- Abstract
Since 1997, the Global Polio Eradication Initiative has sponsored regular door-to-door polio immunisation campaigns in northern Nigeria. On 30 July 2015, the country was finally declared poliofree, a hard won success. At various times, polio eradication has been threatened by rumours and community tensions. For example, in 2003, local Imams, traditional leaders and politicians declared a polio campaign boycott, due to the concerns about the safety of the polio vaccine. Although the campaigns resumed in 2004, many parents continued to refuse vaccination because of the persistence of rumours of vaccine contamination, and anger about the poor state of health services for conditions other than polio. To address this, UNICEF and Nigerian Government partners piloted two interventions: (1) mobile 'health camps' to provide ambulatory care for conditions other than polio and (2) an audiovisual clip about vaccine safety and other health issues, shareable on multimedia mobile phones via Bluetooth pairing. The mobile phone survey found that Bluetooth compatible messages could rapidly spread behavioural health messages in low-literacy communities. The health camps roughly doubled polio vaccine uptake in the urban ward where it was piloted. This suggests that polio eradication would have been accelerated by improving primary health care services.
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- 2017
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19. Containment of Ebola and Polio in Low-Resource Settings Using Principles and Practices of Emergency Operations Centers in Public Health.
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Shuaib FM, Musa PF, Muhammad A, Musa E, Nyanti S, Mkanda P, Mahoney F, Corkum M, Durojaiye M, Nganda GW, Sani SU, Dieng B, Banda R, and Ali Pate M
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- Emergency Medical Services, Humans, Nigeria, Disease Outbreaks prevention & control, Hemorrhagic Fever, Ebola prevention & control, Immunization Programs methods, Poliomyelitis prevention & control, Public Health methods
- Abstract
Emergency Operations Centers (EOCs) have been credited with driving the recent successes achieved in the Nigeria polio eradication program. EOC concept was also applied to the Ebola virus disease outbreak and is applicable to a range of other public health emergencies. This article outlines the structure and functionality of a typical EOC in addressing public health emergencies in low-resource settings. It ascribes the successful polio and Ebola responses in Nigeria to several factors including political commitment, population willingness to engage, accountability, and operational and strategic changes made by the effective use of an EOC and Incident Management System. In countries such as Nigeria where the central or federal government does not directly hold states accountable, the EOC provides a means to improve performance and use data to hold health workers accountable by using innovative technologies such as geographic position systems, dashboards, and scorecards.
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- 2017
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20. Mass immunization with inactivated polio vaccine in conflict zones--Experience from Borno and Yobe States, North-Eastern Nigeria.
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Shuaibu FM, Birukila G, Usman S, Mohammed A, Galway M, Corkum M, Damisa E, Mkanda P, Mahoney F, Wa Nganda G, Vertefeuille J, Chavez A, Meleh S, Banda R, Some A, Mshelia H, Umar AU, Enemaku O, and Etsano A
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- Child, Preschool, Humans, Infant, Infant, Newborn, Nigeria, Program Evaluation, Mass Vaccination statistics & numerical data, Poliomyelitis prevention & control, Poliovirus Vaccine, Inactivated administration & dosage, Warfare
- Abstract
The use of Inactivated Polio Vaccine (IPV) in routine immunization to replace Oral Polio Vaccine (OPV) is crucial in eradicating polio. In June 2014, Nigeria launched an IPV campaign in the conflict-affected states of Borno and Yobe, the largest ever implemented in Africa. We present the initiatives and lessons learned. The 8-day event involved two parallel campaigns. OPV target age was 0-59 months, while IPV targeted all children aged 14 weeks to 59 months. The Borno state primary health care agency set up temporary health camps for the exercise and treated minor ailments for all. The target population for the OPV campaign was 685,674 children in Borno and 113,774 in Yobe. The IPV target population for Borno was 608,964 and for Yobe 111,570. OPV coverage was 105.1 per cent for Borno and 103.3 per cent for Yobe. IPV coverage was 102.9 per cent for Borno and 99.1 per cent for Yobe. (Where we describe coverage as greater than 100 per cent, this reflects original underestimates of the target populations.) A successful campaign and IPV immunization is viable in conflict areas.
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- 2016
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21. Threats to polio eradication in high-conflict areas in Pakistan and Nigeria: a polling study of caregivers of children younger than 5 years.
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SteelFisher GK, Blendon RJ, Guirguis S, Brulé A, Lasala-Blanco N, Coleman M, Petit V, Ahmed M, Mataruse N, Corkum M, Nisar M, Ben-Porath EN, Gigli S, and Sahm C
- Subjects
- Caregivers, Child, Preschool, Endemic Diseases prevention & control, Female, Humans, Infant, Infant, Newborn, Interviews as Topic, Male, Nigeria epidemiology, Pakistan epidemiology, Poliomyelitis epidemiology, Disease Eradication, Ethnic Violence, Health Knowledge, Attitudes, Practice, Health Services Accessibility, Poliomyelitis prevention & control
- Abstract
Background: Elimination of poliovirus from endemic countries is a crucial step in eradication; however, vaccination programmes in these areas face challenges, especially in regions with conflict. We analysed interviews with caregivers of children living in two polio-endemic countries to assess whether these challenges are largely operational or also driven by resistance or misinformation in the community., Methods: We designed and analysed polls based on face-to-face interviews of a random sample of parents and other caregivers of children younger than 5 years in regions of Pakistan and Nigeria at high risk for polio transmission. In both countries, the sample was drawn via a stratified multistage cluster design with random route household selection. The questionnaire covered awareness, knowledge, and attitudes about polio and oral polio vaccine (OPV), trust in vaccination efforts, and caregiver priorities for government action. We assessed experiences of caregivers in accessible higher-conflict areas and compared their knowledge and attitudes with those in lower-conflict areas. Differences were tested with two-sample t tests., Findings: The poll consisted of 3396 caregivers from Pakistan and 2629 from Nigeria. About a third of caregivers who responded in higher-conflict areas of Pakistan (Federally Administered Tribal Areas [FATA], 30%) and Nigeria (Borno, 33%) were unable to confirm that their child was vaccinated in the previous campaign. In FATA, 12% of caregivers reported that they were unaware of polio, and in Borno 12% of caregivers reported that vaccinators visited but their child did not receive the vaccine or they did not know whether the child was vaccinated. Additionally, caregivers in higher-conflict areas are less likely to hold beliefs about OPV that could motivate acceptance and are more likely to hold concerns than are caregivers in lower-conflict areas., Interpretation: Beyond the difficulties in reaching homes with OPV, challenges for vaccination programmes in higher-conflict areas extend to limited awareness, negative attitudes, and gaps in trust. Vaccination efforts might need to address underlying attitudes of caregivers through direct communications and the selection and training of local vaccinators., Funding: Harvard T H Chan School of Public Health and UNICEF., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
- Published
- 2015
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22. Progress Toward Poliomyelitis Eradication--Nigeria, January 2014-July 2015.
- Author
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Etsano A, Gunnala R, Shuaib F, Damisa E, Mkanda P, Ticha JM, Banda R, Korir C, Chevez AE, Enemaku O, Corkum M, Davis LB, Nganda GW, Burns CC, Wassilak SG, and Vertefeuille JF
- Subjects
- Adolescent, Child, Child, Preschool, Humans, Incidence, Infant, Infant, Newborn, Nigeria epidemiology, Poliomyelitis epidemiology, Poliovirus isolation & purification, Disease Eradication, Immunization Programs, Poliomyelitis prevention & control, Poliovirus Vaccines administration & dosage, Population Surveillance
- Abstract
Since the 1988 launch of global poliomyelitis eradication efforts, four of the six World Health Organization (WHO) regions have been certified polio-free. Nigeria is one of only three countries, along with Afghanistan and Pakistan, where transmission of wild poliovirus (WPV) has never been interrupted. During 2003-2013, northern Nigeria served as a reservoir for WPV reintroduction into 26 previously polio-free countries. In 2012, the Nigerian government launched a national polio eradication emergency plan to intensify efforts to interrupt WPV transmission. This report describes polio eradication activities and progress in Nigeria during January 2014-July 2015 and updates previous reports. No WPV cases have been reported to date in 2015, compared with a total of six cases reported during 2014. Onset of paralysis in the latest reported WPV type 1 (WPV1) case was July 24, 2014. Only one case of circulating vaccine-derived poliovirus type 2 (cVDPV2) has been reported to date in 2015, compared with 20 cVDPV2 cases during the same period in 2014. Pending final laboratory testing of 218 remaining specimens of 16,617 specimens collected since January 2015, Nigeria could be removed from the WHO list of polio-endemic countries in September 2015. Major remaining challenges to the national polio eradication program include sustaining political support and program funding in the absence of active WPV transmission, maintaining high levels of population immunity in hard-to-reach areas, and accessing children in security-compromised areas of the northeastern states.
- Published
- 2015
- Full Text
- View/download PDF
23. Progress toward poliomyelitis eradication--Nigeria, January 2013-September 2014.
- Author
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Etsano A, Gunnala R, Shuaib F, Damisa E, Mkanda P, Banda R, Korir C, Enemaku O, Corkum M, Usman S, Davis LB, Nganda Gw, Burns CC, Mahoney F, and Vertefeuille JF
- Subjects
- Adolescent, Child, Child, Preschool, Humans, Incidence, Infant, Infant, Newborn, Nigeria epidemiology, Poliomyelitis epidemiology, Poliovirus genetics, Poliovirus isolation & purification, Disease Eradication, Immunization Programs, Poliomyelitis prevention & control, Poliovirus Vaccines administration & dosage, Population Surveillance
- Abstract
In 1988, the World Health Assembly resolved to interrupt wild poliovirus (WPV) transmission worldwide. By 2013, only three countries remained that had never interrupted WPV transmission: Afghanistan, Nigeria, and Pakistan. Since 2003, northern Nigeria has been a reservoir for WPV reintroduction into 26 previously polio-free countries. In May 2014, the World Health Organization declared the international spread of polio a Public Health Emergency of International Concern. Nigeria's main strategic goal is to interrupt WPV type 1 (WPV1) transmission by the end of 2014, which is also a main objective of the Global Polio Eradication Initiative's Polio Eradication and Endgame Strategic Plan for 2013-2018. This report updates previous reports (4-6) and describes polio eradication activities and progress in Nigeria during January 2013-September 30, 2014. Only six WPV cases had been reported in 2014 through September 30 compared with 49 reported cases during the same period in 2013. The quality of supplemental immunization activities (SIAs) improved during this period; the proportion of local government areas (LGAs) within 11 high-risk states with estimated oral poliovirus vaccine (OPV) campaign coverage at or above the 90% threshold increased from 36% to 67%. However, the number of reported circulating vaccine-derived poliovirus type 2 (cVDPV2) cases increased from four in 2013 to 21 to date in 2014, and surveillance gaps are suggested by genomic sequence analysis and continued detection of WPV1 by environmental surveillance. Interrupting all poliovirus circulation in Nigeria is achievable with continued attention to stopping cVDPV2 transmission, improving the quality of acute flaccid paralysis (AFP) surveillance, increasing vaccination coverage by strengthened routine immunization services, continuing support from all levels of government, and undertaking special initiatives to provide vaccination to children in conflict-affected areas in northeastern Nigeria.
- Published
- 2014
24. Forewarning of poliovirus outbreaks in the Horn of Africa: an assessment of acute flaccid paralysis surveillance and routine immunization systems in Kenya.
- Author
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Walker AT, Sodha S, Warren WC, Sergon K, Kiptoon S, Ogange J, Ahmeda AH, Eshetu M, Corkum M, Pillai S, Scobie H, Mdodo R, Tack DM, Halldin C, Appelgren K, Kretsinger K, Bensyl DM, Njeru I, Kolongei T, Muigai J, Ismail A, and Okiror SO
- Subjects
- Adolescent, Animals, Child, Child, Preschool, Female, Humans, Infant, Infant, Newborn, Kenya epidemiology, Male, Poliovirus Vaccines supply & distribution, Vaccination statistics & numerical data, Disease Outbreaks, Epidemiological Monitoring, Paralysis epidemiology, Paralysis prevention & control, Poliomyelitis epidemiology, Poliomyelitis prevention & control, Poliovirus Vaccines administration & dosage
- Abstract
Background: Although the Horn of Africa region has successfully eliminated endemic poliovirus circulation, it remains at risk for reintroduction. International partners assisted Kenya in identifying gaps in the polio surveillance and routine immunization programs, and provided recommendations for improved surveillance and routine immunization during the health system decentralization process., Methods: Structured questionnaires collected information about acute flaccid paralysis (AFP) surveillance resources, training, data monitoring, and supervision at provincial, district, and health facility levels. The routine immunization program information collected included questions about vaccine and resource availability, cold chain, logistics, health-care services and access, outreach coverage data, microplanning, and management and monitoring of AFP surveillance., Results: Although AFP surveillance met national performance standards, widespread deficiencies and limited resources were observed and reported at all levels. Deficiencies were related to provider knowledge, funding, training, and supervision, and were particularly evident at the health facility level., Conclusions: Gap analysis assists in maximizing resources and capacity building in countries where surveillance and routine immunization lag behind other health priorities. Limited resources for surveillance and routine immunization systems in the region indicate a risk for additional outbreaks of wild poliovirus and other vaccine-preventable illnesses. Monitoring and evaluation of program strengthening activities are needed., (Published by Oxford University Press on behalf of the Infectious Diseases Society of America 2014. This work is written by (a) US Government employee(s) and is in the public domain in the US.)
- Published
- 2014
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- View/download PDF
25. An evaluation of community perspectives and contributing factors to missed children during an oral polio vaccination campaign--Katsina State, Nigeria.
- Author
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Michael CA, Ashenafi S, Ogbuanu IU, Ohuabunwo C, Sule A, Corkum M, Mackay S, Storms AD, Achari P, Biya O, Nguku P, Newberry D, Bwaka A, and Mahoney F
- Subjects
- Adolescent, Adult, Aged, Child, Child, Preschool, Female, Humans, Infant, Infant, Newborn, Interviews as Topic, Male, Middle Aged, Nigeria epidemiology, Poliomyelitis epidemiology, Poliomyelitis immunology, Poliomyelitis transmission, Poliovirus Vaccines immunology, Young Adult, Health Services Research, Poliomyelitis prevention & control, Poliovirus Vaccines administration & dosage, Vaccination statistics & numerical data
- Abstract
Background: Unvaccinated children contribute to accumulation of susceptible persons and the continued transmission of wild poliovirus in Nigeria. In September 2012, the Expert Review Committee (ERC) on Polio Eradication and Routine Immunization in Nigeria recommended that social research be conducted to better understand why children are missed during supplementary immunization activities (SIAs), also known as "immunization plus days (IPDs)" in Nigeria., Methods: Immediately following the SIA in October 2012, polio eradication partners and the government of Nigeria conducted a study to assess why children are missed. We used semistructured questionnaires and focus group discussions in 1 rural and 1 urban local government area (LGA) of Katsina State., Results: Participants reported that 61% of the children were not vaccinated because of poor vaccination team performance: either the teams did not visit the homes (25%) or the children were reported absent and not revisited (36%). This lack of access to vaccine was more frequently reported by respondents from scattered/nomadic communities (85%). In 1 out of 4 respondents (25%), refusal was the main reason their child was not vaccinated. The majority of respondents reported they would have consented to their children being vaccinated if the vaccine had been offered., Conclusions: Poor vaccination team performance is a major contributor to missed children during IPD campaigns. Addressing such operational deficiencies will help close the polio immunity gap and eradicate polio from Nigeria., (© The Author 2014. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2014
- Full Text
- View/download PDF
26. An assessment of the reasons for oral poliovirus vaccine refusals in northern Nigeria.
- Author
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Michael CA, Ogbuanu IU, Storms AD, Ohuabunwo CJ, Corkum M, Ashenafi S, Achari P, Biya O, Nguku P, and Mahoney F
- Subjects
- Adolescent, Adult, Aged, Cross-Sectional Studies, Family Characteristics, Female, Humans, Male, Middle Aged, Nigeria, Patient Acceptance of Health Care statistics & numerical data, Surveys and Questionnaires, Treatment Refusal statistics & numerical data, Young Adult, Patient Acceptance of Health Care psychology, Poliovirus Vaccine, Oral administration & dosage, Treatment Refusal psychology
- Abstract
Background: Accumulation of susceptible children whose caregivers refuse to accept oral poliovirus vaccine (OPV) contributes to the spread of poliovirus in Nigeria., Methods: During and immediately following the OPV campaign in October 2012, polio eradication partners conducted a study among households in which the vaccine was refused, using semistructured questionnaires. The selected study districts had a history of persistent OPV refusals in previous campaigns., Results: Polio risk perception was low among study participants. The majority (59%) of participants believed that vaccination was either not necessary or would not be helpful, and 30% thought it might be harmful. Religious beliefs were an important driver in the way people understood disease. Fifty-two percent of 48 respondents reported that illnesses were due to God's will and/or destiny and that only God could protect them against illnesses. Only a minority (14%) of respondents indicated that polio was a significant problem in their community., Conclusions: Caregivers refuse OPV largely because of poor polio risk perception and religious beliefs. Communication strategies should, therefore, aim to increase awareness of polio as a real health threat and educate communities about the safety of the vaccine. In addition, polio eradication partners should collaborate with other agencies and ministries to improve total primary healthcare packages to address identified unmet health and social needs., (© The Author 2014. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2014
- Full Text
- View/download PDF
27. Screening for new primary cancers in cancer survivors compared to non-cancer controls: a systematic review and meta-analysis.
- Author
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Corkum M, Hayden JA, Kephart G, Urquhart R, Schlievert C, and Porter G
- Subjects
- Case-Control Studies, Female, Health Plan Implementation statistics & numerical data, Humans, Male, Neoplasms, Second Primary epidemiology, Early Detection of Cancer, Neoplasms, Second Primary diagnosis, Survivors statistics & numerical data
- Abstract
Purpose: The goal of this study was to synthesize evidence comparing cancer screening receipt between cancer survivors and non-cancer controls by conducting a systematic review and meta-analysis., Methods: We searched PubMed, EMBASE, and CINAHL databases from inception through April 1, 2010 using search terms related to cancer, survivorship, and cancer screening. Studies were included if they reported a comparison of cancer screening receipt between cancer survivors and non-cancer controls. We performed a meta-analysis on the effect of cancer survivorship on breast, cervical, colorectal, and prostate cancer screening receipt., Results: Our search strategy identified 1,778 titles, of which 20 met our inclusion/exclusion criteria. In our meta-analyses, cancer survivors were more likely to be screened for breast, cervical, colorectal, and prostate cancer than non-cancer controls (pooled odds ratio, 1.27; 95 % CI, 1.19-1.36). We observed significant heterogeneity between studies, most of which remained unexplained after subgroup and sensitivity analyses. Important contextual factors, such as how screening programs operate, were not reported in the primary literature. Many cancer survivors (along with non-cancer controls) still did not receive cancer screening., Conclusion: Compared with non-cancer controls, cancer survivors receive more frequent screening for new primary breast, cervical, colorectal, and prostate cancers. Future research should seek to determine whether increased uptake of cancer screening is associated with improved outcomes during cancer survivorship., Implications for Cancer Survivors: Our systematic review and meta-analysis demonstrated that cancer survivors received more frequent screening for second primary breast, cervical, colorectal, and prostate cancers than non-cancer controls. As many cancer survivors are at an increased risk of developing a second primary cancer, future research should seek to determine whether this increased uptake of cancer screening in cancer survivors leads to improved outcomes during cancer survivorship.
- Published
- 2013
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28. Impact of comorbidity and healthcare utilization on colorectal cancer stage at diagnosis: literature review.
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Corkum M, Urquhart R, Kendell C, Burge F, Porter G, and Johnston G
- Subjects
- Colorectal Neoplasms therapy, Delivery of Health Care methods, Humans, Neoplasm Staging, Palliative Care methods, Colorectal Neoplasms diagnosis, Colorectal Neoplasms pathology, Comorbidity, Health Services statistics & numerical data
- Abstract
Purpose: Individuals diagnosed with cancer close to death have low access to enrollment in palliative care programs. The purpose of this literature review was to assess the usefulness of pre-diagnostic comorbidity and healthcare utilization as indicators of late-stage colorectal cancer (CRC) diagnosis, to help with early identification of individuals who may benefit from palliative care., Methods: A literature search was conducted in relevant databases using title/abstract terms which included "cancer," "stage," "diagnosis," "determinants," "predictors," and "associated." Included studies examined whether comorbidity and/or healthcare utilization had an impact on the stage at which CRC was diagnosed. A standardized data abstraction form was used to assess the eligibility of each study. Thirteen articles were included in the literature review. These studies were assessed and synthesized using qualitative methodology., Results: We found much heterogeneity among study variables. The findings of this literature review point to the presence of comorbidity and non-emergent healthcare utilization as having no association with late-stage diagnosis. Conversely, emergency room presentation (ERP) was associated with late-stage diagnosis., Conclusions: The results of this literature review did not find strong evidence to suggest that comorbidity and healthcare utilization are potential indicators of late-stage diagnosis. However, ERP may be useful as a flag for consideration of prompt referral to palliative care. Additional research is required to identify potential indicators of late-stage diagnosis that may be available in administrative databases, particularly in the area of healthcare utilization.
- Published
- 2012
- Full Text
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29. Prognosticating in palliative care: a survey of Canadian palliative care physicians.
- Author
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Corkum M, Viola R, Veenema C, Kruszelnicki D, and Shadd J
- Subjects
- Adult, Canada, Female, Health Care Surveys, Humans, Male, Middle Aged, Life Expectancy, Palliative Care, Practice Patterns, Physicians', Prognosis
- Abstract
Objective: To determine how palliative care physicians view the accuracy and importance of prognostication, what information they consider, and what processes they use., Methods: A questionnaire was sent to members of the Canadian Society of Palliative Care Physicians (CSPCP). Respondents recorded their perceptions about prognostication and the factors they considered when predicting survival. A patient scenario was described in which a prognosis was requested by two different people: a patient's daughter and a palliative care admissions coordinator., Results: 90 responses were received from 219 CSPCP members (41.1 percent). There was moderate agreement between respondents' perceptions of their own accuracy and that of other physicians (K = 0.549). Of all the respondents, 89.9 percent believed that prognosticating was somewhat or very important. They considered clinical factors most commonly when prognosticating. A range of predictions was given for the scenario; often, the same physician gave different answers to the two people requesting a prognosis., Conclusion: Palliative care physicians believe that prognostication is important and use clinical factors to estimate survival. They often give different estimates to different information recipients.
- Published
- 2011
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