36 results on '"Greenberg, N."'
Search Results
2. Does it matter if there are errors in GHQ-12 response items?
- Author
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Croak B, Greenberg N, Lamb D, Stevelink SAM, and Wessely S
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- Humans, Surveys and Questionnaires standards, Psychometrics standards
- Abstract
Competing Interests: We declare no competing interests.
- Published
- 2024
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3. The real-world safety of sacubitril / valsartan among older adults (≥75): A pharmacovigilance study from the FDA data.
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Lerman TT, Greenberg N, Fishman B, Goldman A, Talmor-Barkan Y, Bauer M, Goldberg I, Goldberg E, Kornowski R, Krause I, Levi A, and Cohen E
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- Humans, Aged, Retrospective Studies, Tetrazoles adverse effects, Angiotensin Receptor Antagonists adverse effects, Pharmacovigilance, Angiotensin-Converting Enzyme Inhibitors, Valsartan adverse effects, Aminobutyrates adverse effects, Biphenyl Compounds adverse effects, Drug Combinations, Stroke Volume, Hyperkalemia chemically induced, Hyperkalemia diagnosis, Hyperkalemia epidemiology, Heart Failure epidemiology, Heart Failure chemically induced, Hypotension chemically induced, Hypotension diagnosis, Hypotension epidemiology, Angioedema chemically induced, Angioedema diagnosis, Angioedema epidemiology, Acute Kidney Injury chemically induced, Acute Kidney Injury diagnosis, Acute Kidney Injury epidemiology
- Abstract
Background: Heart failure is a major cause of morbidity and mortality among older adults. Sacubitril-Valsartan (Sac/Val) has been shown to improve patients' outcomes; however, its safety profile among older adults has not been adequately examined. We therefore aimed to examine its safety profile among this population., Methods: We conducted a retrospective pharmacovigilance study utilizing the FDA's database of safety reports (FAERS). We employed disproportionality analysis comparing Sac/Val to angiotensin receptor blockers (ARBs). We aim to evaluate the reporting of pre-defined adverse events associated with Sac/Val (hypotension, acute kidney injury (AKI), hyperkalemia and angioedema) in two age groups: adults (< 75 years) and older adults (≥ 75). For each subgroup, we calculated reporting odds ratio (ROR) and compared them by calculating P for interaction., Results: The FAERS database encompassed 18,432 unique reports of Sac/Val. Of them, 12,630 (68.5%) subjects were adults (< 75 years), and 5802 (31.5%) were older adults (≥ 75 years), with a median age (IQR) of 68 (59-77). When compared to ARBs, Sac/Val was associated with higher reporting of hypotension, lower reporting of acute kidney injury (AKI) and hyperkalemia, and similar reporting of angioedema. Notably, we did not observe a significant interaction between the age subgroups and the risk estimates (AKI: P
interaction = 0.72, hyperkalemia: Pinteraction = 0.94, hypotension: Pinteraction = 0.31, and angioedema: Pinteraction = 0.61)., Conclusions: In this postmarking study, none of the prespecified adverse events was reported more frequently in older adults. These findings provide reassurance for safety use of Sac/Val in older adults., (Copyright © 2023 Elsevier B.V. All rights reserved.)- Published
- 2024
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4. COVID-19 and the mental health of health-care workers.
- Author
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Lamb D, Stevelink SAM, Scott HR, Greenberg N, and Wessely S
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- Humans, Mental Health, SARS-CoV-2, Health Personnel psychology, Anxiety, COVID-19
- Abstract
Competing Interests: DL is supported by the National Institute for Health and Care Research (NIHR) Applied Research Collaboration (ARC) North Thames. The views expressed in this publication are those of the authors and not necessarily those of the NIHR or the Department of Health and Social Care. SAMS is supported by the NIHR Maudsley Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and an NIHR Advanced Fellowship. NG has been an unpaid member of two NHS England expert advisory groups; and owns the company March on Stress, which is a psychological health consultancy providing mental health training to a wide range of organisations including the NHS. All other authors declare no competing interests.
- Published
- 2023
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5. Prevalence of post-traumatic stress disorder and common mental disorders in health-care workers in England during the COVID-19 pandemic: a two-phase cross-sectional study.
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Scott HR, Stevelink SAM, Gafoor R, Lamb D, Carr E, Bakolis I, Bhundia R, Docherty MJ, Dorrington S, Gnanapragasam S, Hegarty S, Hotopf M, Madan I, McManus S, Moran P, Souliou E, Raine R, Razavi R, Weston D, Greenberg N, and Wessely S
- Subjects
- Male, Female, Humans, Young Adult, Adult, Middle Aged, Aged, Prevalence, Cross-Sectional Studies, Pandemics, State Medicine, Stress Disorders, Post-Traumatic diagnosis, Stress Disorders, Post-Traumatic epidemiology, Stress Disorders, Post-Traumatic psychology, COVID-19 epidemiology
- Abstract
Background: Previous studies on the impact of the COVID-19 pandemic on the mental health of health-care workers have relied on self-reported screening measures to estimate the point prevalence of common mental disorders. Screening measures, which are designed to be sensitive, have low positive predictive value and often overestimate prevalence. We aimed to estimate prevalence of common mental disorders and post-traumatic stress disorder (PTSD) among health-care workers in England using diagnostic interviews., Methods: We did a two-phase, cross-sectional study comprising diagnostic interviews within a larger multisite longitudinal cohort of health-care workers (National Health Service [NHS] CHECK; n=23 462) during the COVID-19 pandemic. In the first phase, health-care workers across 18 NHS England Trusts were recruited. Baseline assessments were done using online surveys between April 24, 2020, and Jan 15, 2021. In the second phase, we selected a proportion of participants who had responded to the surveys and conducted diagnostic interviews to establish the prevalence of mental disorders. The recruitment period for the diagnostic interviews was between March 1, 2021 and Aug 27, 2021. Participants were screened with the 12-item General Health Questionnaire (GHQ-12) and assessed with the Clinical Interview Schedule-Revised (CIS-R) for common mental disorders or were screened with the 6-item Post-Traumatic Stress Disorder Checklist (PCL-6) and assessed with the Clinician Administered PTSD Scale for DSM-5 (CAPS-5) for PTSD., Findings: The screening sample contained 23 462 participants: 2079 participants were excluded due to missing values on the GHQ-12 and 11 147 participants due to missing values on the PCL-6. 243 individuals participated in diagnostic interviews for common mental disorders (CIS-R; mean age 42 years [range 21-70]; 185 [76%] women and 58 [24%] men) and 94 individuals participated in diagnostic interviews for PTSD (CAPS-5; mean age 44 years [23-62]; 79 [84%] women and 15 [16%] men). 202 (83%) of 243 individuals in the common mental disorders sample and 83 (88%) of 94 individuals in the PTSD sample were White. GHQ-12 screening caseness for common mental disorders was 52·8% (95% CI 51·7-53·8). Using CIS-R diagnostic interviews, the estimated population prevalence of generalised anxiety disorder was 14·3% (10·4-19·2), population prevalence of depression was 13·7% (10·1-18·3), and combined population prevalence of generalised anxiety disorder and depression was 21·5% (16·9-26·8). PCL-6 screening caseness for PTSD was 25·4% (24·3-26·5). Using CAPS-5 diagnostic interviews, the estimated population prevalence of PTSD was 7·9% (4·0-15·1)., Interpretation: The prevalence estimates of common mental disorders and PTSD in health-care workers were considerably lower when assessed using diagnostic interviews compared with screening tools. 21·5% of health-care workers met the threshold for diagnosable mental disorders, and thus might benefit from clinical intervention., Funding: UK Medical Research Council; UCL/Wellcome; Rosetrees Trust; NHS England and Improvement; Economic and Social Research Council; National Institute for Health and Care Research (NIHR) Biomedical Research Centre at the Maudsley and King's College London (KCL); NIHR Protection Research Unit in Emergency Preparedness and Response at KCL., Competing Interests: Declaration of interests SAMS is supported by the National Institute for Health and Care Research (NIHR) Maudsley Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and an NIHR Advanced Fellowship. MH has received funding from the Innovative Medicines Initiative for the RADAR-CNS programme, a public-private pre-competitive consortium in mHealth, and his university received research funding from Janssen, Biogen, UCB, MSD, and Lundbeck. PM is supported by the NIHR Applied Research Collaboration (ARC; West) and the NIHR Biomedical Research Centre at University Hospitals Bristol, Weston NHS Foundation Trust, and the University of Bristol. NG has been an unpaid member of two NHS England expert advisory groups; and owns the company March on Stress, which is a psychological health consultancy providing mental health training to a wide range of organisations including the NHS. All other authors declare no competing interests., (Copyright © 2023 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
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6. The mental health of staff working on intensive care units over the COVID-19 winter surge of 2020 in England: a cross sectional survey.
- Author
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Hall CE, Milward J, Spoiala C, Bhogal JK, Weston D, Potts HWW, Caulfield T, Toolan M, Kanga K, El-Sheikha S, Fong K, and Greenberg N
- Subjects
- Cross-Sectional Studies, Depression epidemiology, Humans, Intensive Care Units, Mental Health, Pandemics, State Medicine, COVID-19 epidemiology
- Abstract
Background: The COVID-19 pandemic generated a surge of critically ill patients greater than the capacity of the UK National Health Service (NHS). There have been multiple well-documented impacts associated with the national COVID-19 pandemic surge on ICU staff, including an increased prevalence of mental health disorders on a scale potentially sufficient to impair high-quality care delivery. We investigated the prevalence of five mental health outcomes; explored demographic and professional predictors of poor mental health outcomes; and describe the prevalence of functional impairment; and explore demographic and professional predictors of functional impairment in ICU staff over the 2020/2021 winter COVID-19 surge in England., Methods: English ICU staff were surveyed before, during, and after the winter 2020/2021 surge using a survey which comprised validated measures of mental health., Results: A total of 6080 surveys were completed, by ICU nurses (57.5%), doctors (27.9%), and other healthcare staff (14.5%). Reporting probable mental health disorders increased from 51% (before) to 64% (during), and then decreased to 46% (after). Younger, less experienced nursing staff were most likely to report probable mental health disorders. During and after the winter, >50% of participants met threshold criteria for functional impairment. Staff who reported probable post-traumatic stress disorder, anxiety, or depression were more likely to meet threshold criteria for functional impairment., Conclusions: The winter of 2020/2021 was associated with an increase in poor mental health outcomes and functional impairment amongst ICU staff during a period of peak caseload. These effects are likely to impact on patient care outcomes and the longer-term resilience of the healthcare workforce., Competing Interests: Declarations of interest NG runs a consultancy which provides the NHS with active listening and peer support training. KF works at University College London Hospitals as a consultant anaesthetist, holds an academic chair at University College London, and is seconded to NHS England as an advisor. HWWP has received funding from Public Health England and from NHS England. HWWP has a PhD student who works at and has fees paid by AstraZeneca. KK works for the Care Quality Commission., (Copyright © 2022. Published by Elsevier Ltd.)
- Published
- 2022
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7. COVID-19 survey burden for health care workers: literature review and audit.
- Author
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Gnanapragasam SN, Hodson A, Smith LE, Greenberg N, Rubin GJ, and Wessely S
- Subjects
- Humans, Pandemics, Surveys and Questionnaires, Attitude of Health Personnel, COVID-19, Health Personnel psychology
- Abstract
Objectives: Concerns have been raised about the quantity and quality of research conducted during the COVID-19 pandemic, particularly related to the mental health and wellbeing of health care workers (HCWs). For understanding the volume, source, methodological rigour and degree of overlap in COVID-19, studies were conducted among HCWs in the United Kingdom (UK)., Study Design: Mixed methods approach, literature review and audit., Methods: First, a literature review of published research studies and second, an audit of studies HCWs have been invited to complete. For the literature review, we searched Medline, PsycINFO and Nexis, webpages of three medical organisations (Royal Society of Medicine, Royal College of Nursing and British Medical Association), and the YouGov website. For the audit, a non-random purposive sample of six HCWs from different London NHS Trusts reviewed email, WhatsApp and SMS messages they received for study invitations., Results: The literature review identified 27 studies; the audit identified 70 study invitations. Studies identified by the literature review were largely of poor methodological rigour: only eight studies (30%) provided response rate, one study (4%) reported having ethical approval, and one study (4%) reported funding details. There was substantial overlap in the topics measured. In the audit, volunteers received a median of 12 invitations. The largest number of study invitations were for national surveys (n = 23), followed by local surveys (n = 16) and research surveys (n = 8)., Conclusion: HCWs have been asked to complete numerous surveys that frequently have methodological shortcomings and overlapping aims. Many studies do not follow scientific good-practice and generate questionable, non-generalisable results., (Copyright © 2021 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2022
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8. The effect of the withdrawal from Afghanistan on military personnel's mental health.
- Author
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Bryant RA, Greenberg N, and Forbes D
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- Humans, Afghan Campaign 2001-, Mental Health, Military Personnel psychology
- Abstract
Competing Interests: We declare no competing interests. The opinions and assertions expressed in this Comment are those of the authors and do not reflect the official policy or position of the authors' governments or institutions.
- Published
- 2021
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9. Social and psychological impact of the COVID-19 pandemic on people with Parkinson's disease: a scoping review.
- Author
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Brooks SK, Weston D, and Greenberg N
- Subjects
- Humans, Mental Health, Pandemics, SARS-CoV-2, COVID-19, Parkinson Disease epidemiology
- Abstract
Objectives: The COVID-19 pandemic caused countries across the globe to impose restrictions to slow the spread of the virus, with people instructed to stay at home and reduce contact with others. This reduction in social contact has the potential to negatively impact mental health and well-being. The restrictions are particularly concerning for people with existing chronic illnesses such as Parkinson's disease, who may be especially affected by concerns about the pandemic and associated reduction of social contact. The aim of this review was to synthesise published literature on the impact of the COVID-19 pandemic on the social and psychological well-being of people with Parkinson's disease., Study Design: The design of this study is a scoping review., Methods: We searched five electronic databases for English language articles containing primary data on this topic., Results: Thirty-one relevant studies were found and included in the review. Six main themes were identified: impact of the pandemic on physical and mental health; COVID-19 concerns; access to health care; impact on daily and social activities; impact on physical activity and impact on caregivers. Levels of perceived risk of COVID-19 differed across studies, but most participants had adopted preventive measures such as staying at home and reducing social contacts. Participants in many studies reported a discontinuation of regular healthcare appointments and physiotherapy, as well as concerns about being able to obtain medication. Loss of daily activities and social support was noted by many participants. There was mixed evidence on the impact of the pandemic on physical exercise, with some studies finding no change in physical activity and others reporting a reduction; generally, participants with reduced physical activity had poorer mental health and greater worsening of symptoms. Caregivers of people with Parkinson's disease were more likely to be negatively affected by the pandemic if they cared for people with complex needs such as additional mental health problems., Conclusions: The COVID-19 pandemic has had negative effects on the physical and mental health of people with Parkinson's disease, perhaps due to disruption of healthcare services, loss of usual activities and supports and reduction in physical activity. We make recommendations for policy, practice and future research., (Copyright © 2021 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2021
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10. Surgical Treatment of Bartholin's Gland Abscess: Is Word Catheter Superior to Marsupialization?
- Author
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Rotem R, Diamant C, Rottenstreich M, Goldgof M, Barg M, Greenberg N, Sheizaf B, and Weintraub AY
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- Abscess surgery, Catheters, Drainage, Female, Humans, Retrospective Studies, Bartholin's Glands surgery
- Abstract
Study Objective: Bartholin's gland abscess may occur in up to 2% of the women. Surgical drainage using the Word catheter application or marsupialization is the treatment of choice in the management of Bartholin's gland abscess. We aimed to compare the abscess recurrence rates between these 2 surgical methods., Design: A retrospective cohort database study., Setting: A university-affiliated, high-volume teaching hospital in southern Israel., Patients: All women who were surgically treated for Bartholin's gland abscess., Interventions: Different clinical and postoperative characteristics were retrieved from the patients' records. A univariate analysis was conducted, and p <.05 was considered significant., Measurements and Main Results: During the study period, 321 women were admitted to our center with Bartholin's gland abscess and were managed surgically. Of these, 215 (67%) were treated using the Word catheter and 106 (33%) by drainage and marsupialization. No differences were found in clinical and microbiologic features between the study groups. In addition, recurrence rates as well as recurrent admissions did not differ significantly. Postoperative complications were similar between the groups., Conclusion: Our study reassures that both the Word catheter application and marsupialization are appropriate and safe when treating Bartholin's gland abscess., (Copyright © 2021 AAGL. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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11. Moral injury: the effect on mental health and implications for treatment.
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Williamson V, Murphy D, Phelps A, Forbes D, and Greenberg N
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- Humans, Stress Disorders, Post-Traumatic psychology, Mental Health, Morals, Veterans psychology
- Abstract
Competing Interests: VW, DM, and NG had financial support from a Forces in Mind Trust grant (FiMT17/0920E) for the submitted work. NG was funded by the National Institute for Health Research Health Protection Research Unit in Emergency Preparedness and Response, a partnership between Public Health England, King's College London, and the University of East Anglia. The views expressed are those of the authors and not necessarily those of the NIHR, Public Health England, or the Department of Health and Social Care. The funders did not have a role in the drafting of the manuscript or the decision to submit for publication. The other authors declare no competing interests.
- Published
- 2021
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12. The evolving role of commutability in metrological traceability.
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Greg Miller W, Greenberg N, Budd J, and Delatour V
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- Bias, Calibration, Humans, Laboratories, Reference Standards, Clinical Laboratory Services
- Abstract
Commutability is a property of a reference material (RM) which denotes that the analytical response in measurement procedures (MPs) observed for the measurand is the same for the RM as for clinical samples that contain the same amount of the measurand. Matrix-based secondary calibrators are required to be commutable with clinical samples to achieve metrological traceability of results from a clinical laboratory MP to higher order references. Results for clinical samples may not agree among different end-user MPs if a noncommutable RM is used in the calibration hierarchy for one or more of the MPs. Consequently, a useful RM is one that is commutable with clinical samples for all or most MPs in common use. If a matrix-based RM is noncommutable for one or a few MPs, a correction for the noncommutability bias may be added in the calibration hierarchy to enable the results for clinical samples to be metrologically traceable to the RM. Producing a large batch of matrix-based RM requires pooling single donations and making various modifications of the matrix such as spiking with exogenous substances, freezing or lyophilization. These modifications could potentially affect commutability of the RM and compromise its suitability. Documentation of commutability of matrix-based RMs used as calibrators is required by the International Organization for Standardization and the Joint Committee for Traceability in Laboratory Medicine. We describe how commutability was recognized as a critical requirement for metrological traceability and we present recommendations from the IFCC Working Groups on Commutability and on Commutability in Metrological Traceability., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2021
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13. Psychological impact of infectious disease outbreaks on pregnant women: rapid evidence review.
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Brooks SK, Weston D, and Greenberg N
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- Adult, Female, Health Personnel psychology, Humans, Pregnancy, Prenatal Care, Social Support, COVID-19 epidemiology, COVID-19 psychology, Disease Outbreaks, Pregnant Women psychology, SARS-CoV-2
- Abstract
Objectives: Infectious disease outbreaks can be distressing for everyone, especially those deemed to be particularly vulnerable such as pregnant women, who have been named a high-risk group in the current COVID-19 pandemic. This paper aimed to summarise existing literature on the psychological impact of infectious disease outbreaks on women who were pregnant at the time of the outbreak., Study Design: The design of this study is a rapid review., Methods: Five databases were searched for relevant literature, and main findings were extracted., Results: Thirteen articles were included in the review. The following themes were identified: negative emotional states; living with uncertainty; concerns about infection; concerns about and uptake of prophylaxis or treatment; disrupted routines; non-pharmaceutical protective behaviours; social support; financial and occupational concerns; disrupted expectations of birth, prenatal care and postnatal care and sources of information., Conclusions: Pregnant women have unique needs during infectious disease outbreaks and could benefit from up-to-date, consistent information and guidance; appropriate support and advice from healthcare professionals, particularly with regards to the risks and benefits of prophylaxis and treatment; virtual support groups and designating locations or staff specifically for pregnant women., (Copyright © 2020 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2020
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14. Mixed signals about the mental health of the NHS workforce.
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Lamb D, Greenberg N, Stevelink SAM, and Wessely S
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- Humans, State Medicine, United Kingdom, Health Personnel psychology, Mental Health, Mental Health Services organization & administration
- Published
- 2020
- Full Text
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15. How might the NHS protect the mental health of health-care workers after the COVID-19 crisis?
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Greenberg N, Brooks SK, Wessely S, and Tracy DK
- Subjects
- Betacoronavirus, COVID-19, Coronavirus Infections epidemiology, Humans, Pandemics, Pneumonia, Viral epidemiology, SARS-CoV-2, State Medicine, United Kingdom epidemiology, Coronavirus Infections psychology, Health Personnel psychology, Mental Health Services organization & administration, Pneumonia, Viral psychology
- Published
- 2020
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16. The psychological impact of quarantine and how to reduce it: rapid review of the evidence.
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Brooks SK, Webster RK, Smith LE, Woodland L, Wessely S, Greenberg N, and Rubin GJ
- Subjects
- COVID-19, Coronavirus Infections epidemiology, Coronavirus Infections transmission, Financing, Personal, Humans, Pneumonia, Viral epidemiology, Pneumonia, Viral transmission, Public Health, Social Conditions, Social Stigma, Stress Disorders, Post-Traumatic etiology, Stress Disorders, Post-Traumatic prevention & control, Coronavirus Infections prevention & control, Pneumonia, Viral prevention & control, Quarantine economics, Quarantine psychology, Stress, Psychological
- Abstract
The December, 2019 coronavirus disease outbreak has seen many countries ask people who have potentially come into contact with the infection to isolate themselves at home or in a dedicated quarantine facility. Decisions on how to apply quarantine should be based on the best available evidence. We did a Review of the psychological impact of quarantine using three electronic databases. Of 3166 papers found, 24 are included in this Review. Most reviewed studies reported negative psychological effects including post-traumatic stress symptoms, confusion, and anger. Stressors included longer quarantine duration, infection fears, frustration, boredom, inadequate supplies, inadequate information, financial loss, and stigma. Some researchers have suggested long-lasting effects. In situations where quarantine is deemed necessary, officials should quarantine individuals for no longer than required, provide clear rationale for quarantine and information about protocols, and ensure sufficient supplies are provided. Appeals to altruism by reminding the public about the benefits of quarantine to wider society can be favourable., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2020
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17. Prevalence of Mental Health Disorders in Elderly U.S. Military Veterans: A Meta-Analysis and Systematic Review.
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Williamson V, Stevelink SAM, Greenberg K, and Greenberg N
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- Aged, Humans, Mental Health, Prevalence, Stress Disorders, Post-Traumatic epidemiology, United States epidemiology, Alcohol-Related Disorders epidemiology, Substance-Related Disorders epidemiology, Veterans psychology
- Abstract
Objective: Older veterans may be vulnerable to mental health problems. Meta-analytic and systematic review methods sought to determine the prevalence rate of mental health disorders in older military veterans (≥65 years)., Methods: Eleven studies were eligible, and meta-analyses of veteran depression, substance abuse, post-traumatic stress disorder (PTSD), anxiety, dementia, bipolar disorder, and schizophrenia were conducted., Results: Although conducted exclusively with U.S. veterans, high prevalence rates of substance (5.7%) and alcohol use disorders (5.4%) in older veterans were found. However, the prevalence of other mental health disorders, including PTSD and depression, in older veterans was not markedly high., Conclusion: The rates of disorder prevalence observed indicates a need for continued awareness of mental health difficulties, particularly substance and alcohol use disorders, in older veterans. In the future studies with non-U.S. military samples using a longitudinal design are required to further understand the prevalence of mental health disorders in geriatric veterans., (Copyright © 2017 American Association for Geriatric Psychiatry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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18. Are brief alcohol interventions targeting alcohol use efficacious in military and veteran populations? A meta-analysis.
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Doherty AM, Mason C, Fear NT, Rona R, Greenberg N, and Goodwin L
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- Counseling, Ethanol chemistry, Humans, Veterans, Alcohol Drinking epidemiology, Alcohol Drinking prevention & control, Alcoholism rehabilitation, Military Personnel statistics & numerical data
- Abstract
Background: Rates of hazardous and harm-related drinking are higher in the military and veteran populations compared to the general population. Brief alcohol interventions (BAIs) targeting alcohol use appear to reduce harmful drinking in the general population. However, less is known about the efficacy of BAIs targeting alcohol in military and veteran populations., Methods: A systematic review and meta-analysis was conducted to assess the type and efficacy of BAIs used to reduce alcohol use in military and veteran populations conducted from 2000 onwards. The meta-analysis was conducted using a standardised outcome measure of change in average weekly drinks (AWDs) from baseline to follow-up., Results: The search revealed 10 papers that met the search criteria, and that reported data on 11 interventions included in the systematic review. 8 papers (reporting on 9 different interventions) were included in the meta-analysis after 2 papers were excluded for which the relevant outcome data were not available. There was no overall effect of BAIs; a non-significant weekly drink reduction of 0.95 drinks was found (95% CI, -0.17 to 2.07). This lack of efficacy persisted regardless of military group (conscripts, serving or veterans) and method of delivery (i.e., face-to-face, web-based or written information). Furthermore, sensitivity analyses revealed this small drink reduction was driven mainly by a single study., Conclusions: Based on these findings, existing BAIs do not seem to be efficacious in reducing alcohol use in military populations, despite some encouraging results from one electronic intervention which was of extensive duration., (Copyright © 2017 Elsevier B.V. All rights reserved.)
- Published
- 2017
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19. Post-deployment screening for mental disorders and help-seeking in the UK military - Authors' reply.
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Rona RJ, Burdett H, Greenberg N, Fear NT, and Wessely S
- Subjects
- Afghan Campaign 2001-, Humans, Iraq War, 2003-2011, Stress Disorders, Post-Traumatic, United Kingdom, Mental Disorders, Military Personnel
- Published
- 2017
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20. Post-deployment screening for mental disorders and tailored advice about help-seeking in the UK military: a cluster randomised controlled trial.
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Rona RJ, Burdett H, Khondoker M, Chesnokov M, Green K, Pernet D, Jones N, Greenberg N, Wessely S, and Fear NT
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- Adolescent, Adult, Alcoholism epidemiology, Alcoholism psychology, Anxiety epidemiology, Anxiety psychology, Cluster Analysis, Depression epidemiology, Depression psychology, Female, Humans, Male, Mental Disorders epidemiology, Mental Health, Outcome Assessment, Health Care, Self Report, Stress Disorders, Post-Traumatic epidemiology, Stress Disorders, Post-Traumatic psychology, United Kingdom epidemiology, Young Adult, Help-Seeking Behavior, Mass Screening methods, Mental Disorders diagnosis, Military Personnel psychology
- Abstract
Background: The effectiveness of post-deployment screening for mental disorders has not been assessed in a randomised controlled trial. We aimed to assess whether post-deployment screening for post-traumatic stress disorder (PTSD), depression, anxiety, or alcohol misuse was effective. We defined screening as the presumptive identification of a previously unrecognised disorder using tests to distinguish those who probably had the disorder from those who probably did not so that those people with a probable disorder could be referred appropriately, and assessed effectiveness and consequences for help-seeking by the odds ratio at follow-up between those receiving tailored help-seeking advice and those who received general mental health advice., Methods: We did a cluster randomised controlled trial among Royal Marines and Army personnel in the UK military after deployment to Afghanistan. Platoons were randomly assigned (1:1 initially, then 2:1) by stratified block randomisation with randomly varying block sizes of two and four to the screening group, which received tailored help-seeking advice, or the control group, which received general mental health advice. Initial assessment took place 6-12 weeks after deployment; follow-up assessments were done 10-24 months later. Follow-up measures were the PTSD Checklist-Civilian Version, Patient Health Questionnaire-9, Generalised Anxiety Disorder-7 scale, Alcohol Use Disorder Identification Test (AUDIT), and self-reported help-seeking from clinical and welfare providers comparing those receiving tailored advice and those receiving only general advice. All participants and all investigators other than the person who analysed the data were masked to allocation. The primary outcomes were PTSD, depression or generalised anxiety disorder, and alcohol misuse at follow-up. A key secondary outcome was assessment of whether post-deployment screening followed by tailored advice would modify help-seeking behaviour. Comparisons were made between screening and control groups, with primary analyses by intention to treat. This trial is registered with the ISRCTN Registry, number ISRCTN19965528., Findings: Between Oct 24, 2011, and Oct 31, 2014, 434 platoons comprising 10 190 personnel were included: 274 (6350 personnel) in the screening group and 160 (3840 personnel) in the control group. 5577 (88%) of 6350 personnel received screening and 3996 (63%) completed follow-up, whereas 3149 (82%) of 3840 received the control questionnaire and 2369 (62%) completed follow-up. 1958 (35%) of 5577 personnel in the screening group declined to see the tailored advice, but those with PTSD (83%) or anxiety or depression (84%) were more likely than non-cases (64%) to view the advice (both p<0·0001). At follow-up, there were no significant differences in prevalence between groups for PTSD (adjusted odds ratio 0·92, 95% CI 0·75-1·14), depression or anxiety (0·91, 0·71-1·16), alcohol misuse (0·88, 0·73-1·06), or seeking support for mental disorders (0·92, 0·78-1·08)., Interpretation: Post-deployment screening for mental disorders based on tailored advice was not effective at reducing prevalence of mental health disorders nor did it increase help-seeking. Countries that have implemented post-deployment screening programmes for mental disorders should consider monitoring the outcomes of their programmes., Funding: The US Army Medical Research and Materiel Command-Military Operational Medicine Research Program (USAMRMC-MOMRP)., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2017
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21. Epidemiologic and Microbiologic Characteristics of Occult Bacteremia Among Febrile Children in Southern Israel, Before and After Initiation of the Routine Antipneumococcal Immunization (2005-2012).
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Ribitzky-Eisner H, Minuhin Y, Greenberg D, Greenberg N, Chodick G, Craiu M, and Leibovitz E
- Subjects
- Child, Preschool, Emergency Service, Hospital, Female, Fever epidemiology, Humans, Incidence, Infant, Israel epidemiology, Male, Pneumococcal Infections prevention & control, Retrospective Studies, Streptococcus pneumoniae, Vaccination, Vaccines, Conjugate, Bacteremia epidemiology, Bacteremia microbiology, Fever microbiology, Pneumococcal Infections epidemiology, Pneumococcal Vaccines
- Abstract
Background: Little is known about the incidence and dynamics of occult bacteremia (OB) among infants/young children following the introduction of pneumococcal conjugate vaccines (PCVs) into the national immunization program in Israel in 2009-2010. The aim of this study was to characterize the epidemiologic and microbiologic picture of OB among febrile infants/children aged 3-36 months in southern Israel, before and after PCVs introduction., Methods: Retrospective study enrolling all infants/young children attending the emergency room of a tertiary medical center in southern Israel with fever without source, discharged, and reported with a positive blood culture., Results: Of 453 true bacteremias, 89 (19.6%) were defined as OB. OB rate was 0.22%; a significant decrease was recorded in OB rates, with the highest rate during 2005 (0.34%) and the lowest during 2011 (0.15%). OB cases decreased in post-PCV (2010-2012) versus prevaccination period (2005-2009) from 66/22,256 cases (0.3%) to 23/13,213 cases (0.17%; p = 0.03). Most frequent single OB pathogens were Streptococcus pneumoniae, Streptococcus viridans spp., and Kingella kingae (39.3%, 10.1%, and 9.0%, respectively); Enterobacteriaceae spp. were isolated in 10 cases (11.2%). No changes were recorded in S. pneumoniae-OB cases; K. kingae-OB decreased significantly (p = 0.047). None of the S. pneumoniae serotypes isolated during 2011-2012 belonged to 13-valent PCV (PCV13). An increase in non PCV13 serotypes was recorded during 2011-2012 (3/3, 100% vs. 7/32, 21.9%, p = 0.01)., Conclusion: OB rates decreased significantly following the introduction of PCVs. S. pneumoniae was the most frequent isolated pathogen in OB, but in lower percentages compared with the medical literature. No PCV13 serotypes were detected as a cause of OB during 2011-2012., (Copyright © 2015. Published by Elsevier B.V.)
- Published
- 2016
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22. Alcohol misuse in the United Kingdom Armed Forces: A longitudinal study.
- Author
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Thandi G, Sundin J, Ng-Knight T, Jones M, Hull L, Jones N, Greenberg N, Rona RJ, Wessely S, and Fear NT
- Subjects
- Adult, Afghan Campaign 2001-, Cohort Studies, Female, Humans, Iraq War, 2003-2011, Longitudinal Studies, Male, Mental Health, Middle Aged, Smoking adverse effects, Smoking psychology, Socioeconomic Factors, Stress Disorders, Post-Traumatic complications, Stress Disorders, Post-Traumatic psychology, Surveys and Questionnaires, United Kingdom epidemiology, Young Adult, Alcoholism epidemiology, Military Personnel statistics & numerical data
- Abstract
Objectives: We assessed changes in Alcohol Use Disorders Identification Test (AUDIT) scores over time. We investigated the impact of life events and changes in mental health status on AUDIT scores over time in UK military personnel., Methods: A random representative sample of regular UK military personnel who had been serving in 2003 were surveyed in 2004-2006 (phase 1) and again in 2007-2009 (phase 2). The impact of changes in symptoms of psychological distress, probable post-traumatic stress disorder (PTSD), marital status, serving status, rank, deployment to Iraq/Afghanistan and smoking was assessed between phases., Results: We found a statistically significant but small decrease in AUDIT scores between phases 1 and 2 (mean change=-1.01, 95% confidence interval=-1.14, -0.88). Participants reported a decrease in AUDIT scores if they experienced remission in psychological distress (adjusted mean -2.21, 95% CI -2.58, -1.84) and probable PTSD (adjusted mean -3.59, 95% CI -4.41, -2.78), if they stopped smoking (adjusted mean -1.41, 95% CI -1.83, -0.98) and were in a new relationship (adjusted mean -2.77, 95% CI -3.15, -2.38). On the other hand, reporting new onset or persistent symptoms of probable PTSD (adjusted mean 1.34, 95% CI 0.71, 1.98) or a relationship breakdown (adjusted mean 0.53, 95% CI 0.07, 0.99) at phase 2 were associated with an increase in AUDIT scores., Conclusions: The overall level of hazardous alcohol consumption remains high in the UK military. Changes in AUDIT scores were linked to mental health and life events but not with deployment to Iraq or Afghanistan., (Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2015
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23. Update on current concepts and meanings in laboratory medicine --Standardization, traceability and harmonization.
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Greenberg N
- Subjects
- Calibration, Humans, Reference Standards, Reproducibility of Results, Clinical Laboratory Techniques standards
- Abstract
An increasingly important quality objective in laboratory medicine is ensuring the equivalence of test results among different measurement procedures, different laboratories and health care systems, over time. In recent years, interest in sharing a single patient's clinical laboratory data, regardless of where the measurements are performed, has moved out of the domain of the scientific community and spilled over into the domain of regulators, lawmakers and the general population in many parts of the world. For all parties involved in the dialog, establishing and maintaining a clear understanding of the essential concepts that are vital to achieving global equivalence among clinical laboratory measurements have therefore become a priority. Concepts that are critical to this discussion include standardization, traceability and harmonization. This report provides an updated discussion and practical definitions for these terms and others that are linked to metrological principles., (Copyright © 2014 Elsevier B.V. All rights reserved.)
- Published
- 2014
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- View/download PDF
24. Violent offending by UK veterans - Authors' reply.
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MacManus D, Dean K, Jones M, Rona R, Greenberg N, Wessely S, and Fear N
- Subjects
- Humans, Male, Aggression, Criminals statistics & numerical data, Mental Disorders complications, Military Personnel statistics & numerical data, Substance-Related Disorders complications, Veterans statistics & numerical data, Violence statistics & numerical data
- Published
- 2013
- Full Text
- View/download PDF
25. Violent offending by UK military personnel deployed to Iraq and Afghanistan: a data linkage cohort study.
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Macmanus D, Dean K, Jones M, Rona RJ, Greenberg N, Hull L, Fahy T, Wessely S, and Fear NT
- Subjects
- Adult, Afghanistan, Alcoholism complications, Arousal, Cohort Studies, Confounding Factors, Epidemiologic, Criminals psychology, Data Collection, Databases, Factual, Humans, Incidence, Iraq War, 2003-2011, Male, Middle Aged, Military Personnel psychology, Odds Ratio, Risk Factors, Sampling Studies, Self Report, Stress Disorders, Post-Traumatic complications, Surveys and Questionnaires, United Kingdom epidemiology, Veterans psychology, Violence psychology, Aggression, Criminals statistics & numerical data, Mental Disorders complications, Military Personnel statistics & numerical data, Substance-Related Disorders complications, Veterans statistics & numerical data, Violence statistics & numerical data
- Abstract
Background: Violent offending by veterans of the Iraq and Afghanistan conflicts is a cause for concern and there is much public debate about the proportion of ex-military personnel in the criminal justice system for violent offences. Although the psychological effects of conflict are well documented, the potential legacy of violent offending has yet to be ascertained. We describe our use of criminal records to investigate the effect of deployment, combat, and post-deployment mental health problems on violent offending among military personnel relative to pre-existing risk factors., Methods: In this cohort study, we linked data from 13,856 randomly selected, serving and ex-serving UK military personnel with national criminal records stored on the Ministry of Justice Police National Computer database. We describe offending during the lifetime of the participants and assess the risk factors for violent offending., Findings: 2,139 (weighted 17.0%) of 12,359 male UK military personnel had a criminal record for any offence during their lifetime. Violent offenders (1,369 [11.0%]) were the most prevalent offender types; prevalence was highest in men aged 30 years or younger (521 [20.6%] of 2,728) and fell with age (164 [4.7%] of 3027 at age >45 years). Deployment was not independently associated with increased risk of violent offending, but serving in a combat role conferred an additional risk, even after adjustment for confounders (violent offending in 137 [6.3%] of 2178 men deployed in a combat role vs 140 (2.4%) of 5,797 deployed in a non-combat role; adjusted hazard ratio 1.53, 95% CI 1.15-2.03; p=0.003). Increased exposure to traumatic events during deployment also increased risk of violent offending (violent offending in 104 [4.1%] of 2753 men with exposure to two to four traumatic events vs 56 [1.6%] of 2944 with zero to one traumatic event, 1.77, 1.21-2.58, p=0.003; and violent offending in 122 [5.1%] of 2582 men with exposure to five to 16 traumatic events, 1.65, 1.12-2.40, p=0.01; test for trend, p=0.032). Violent offending was strongly associated with post-deployment alcohol misuse (violent offending in 120 [9.0%] of 1363 men with alcohol misuse vs 155 [2.3%] of 6768 with no alcohol misuse; 2.16, 1.62-2.90; p<0.0001), post-traumatic stress disorder (violent offending in 25 [8.6%] of 344 men with post-traumatic stress disorder vs 221 [3.0%] of 7256 with no symptoms of post-traumatic stress disorder; 2.20, 1.36-3.55; p=0.001), and high levels of self-reported aggressive behaviour (violent offending in 56 [6.7%] of 856 men with an aggression score of six to 16 vs 22 [1.2%] of 1685 with an aggression score of zero; 2.47, 1.37-4.46; p=0.003). Of the post-traumatic stress disorder symptoms, the hyperarousal cluster was most strongly associated with violent offending (2.01, 1.50-2.70; p<0.0001)., Interpretation: Alcohol misuse and aggressive behaviour might be appropriate targets for interventions, but any action must be evidence based. Post-traumatic stress disorder, though less prevalent, is also a risk factor for violence, especially hyperarousal symptoms, so if diagnosed it should be appropriately treated and associated risk monitored., Funding: Medical Research Council and the UK Ministry of Defence., (Copyright © 2013 Elsevier Ltd. All rights reserved.)
- Published
- 2013
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26. "Warriors": impact of a powerful television drama on the psychological health of U.K. Bosnia peacekeepers.
- Author
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Fernando A, Hull L, Greenberg N, Fear NT, Hotopf M, and Wessely S
- Subjects
- Adult, Bosnia and Herzegovina, Female, Humans, Male, Mental Health, United Kingdom, Military Personnel psychology, Stress Disorders, Post-Traumatic psychology, Television, Wounds and Injuries psychology
- Abstract
Purpose: The impact of secondary trauma, such as watching powerful images on television, on the etiology of posttraumatic stress disorder in adults remains controversial. We explored the impact of a powerful TV drama ("Warriors") on the psychological health of U.K. peacekeeping troops compared with other military personnel who also saw the program but did not deploy on the same mission., Methods: Psychological health (health perception, fatigue, posttraumatic stress reactions and common mental disorders) was assessed via questionnaire in a group of 1463 U.K. Armed Forces personnel before and after the televising of an award-winning dramatic reconstruction ("Warriors") of events in Former Yugoslavia, a deployment in which some of the respondents had participated (Bosnia group) and some who had not (Era group). Information was also collected on whether participants had seen Warriors., Results: Those who had deployed to Bosnia were more likely to have watched the drama, and viewers were more likely to be posttraumatic stress reactions and common mental disorders cases before transmission of the program. There were few health differences between viewers and nonviewers, and Bosnia viewers and Era viewers, posttransmission. Viewing status and group status (Bosnia/Era) restricted to viewers only did not predict posttransmission health outcomes, with one exception. Group status (viewers only) was a significant predictor of posttransmission fatigue, with Bosnia viewers more likely to be cases. Additional analyses, however, revealed the same finding for nonviewers., Conclusions: We found no evidence that those with symptoms of traumatic distress avoided watching a drama relevant to their experiences and no evidence of adverse effects on mental health., (Copyright © 2011 Elsevier Inc. All rights reserved.)
- Published
- 2011
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27. Coming home: social functioning and the mental health of UK Reservists on return from deployment to Iraq or Afghanistan.
- Author
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Harvey SB, Hatch SL, Jones M, Hull L, Jones N, Greenberg N, Dandeker C, Fear NT, and Wessely S
- Subjects
- Adult, Afghan Campaign 2001-, Afghanistan, Alcohol Drinking epidemiology, Cohort Studies, Data Collection, Female, Humans, Iraq War, 2003-2011, Male, Military Personnel classification, Social Support, Stress Disorders, Post-Traumatic epidemiology, Young Adult, Mental Health, Military Personnel psychology, Social Behavior
- Abstract
Purpose: There is speculation that high rates of mental illness among Reservists returning from deployment to Iraq and Afghanistan may be due to the challenge of reintegrating into civilian life. We aimed to examine the postdeployment social functioning of Reservists and to explore the relationship between adverse postdeployment experiences and subsequent mental ill health., Methods: A sample of 4,991 UK military personnel who had deployed to either Iraq or Afghanistan were asked about their postdeployment experiences with a particular focus on their levels of social integration, perceived support from the military, and civilian employment. All participants were asked to complete a series of validated measures of mental health., Results: Compared with Regular personnel, Reservists were more likely to feel unsupported by the military and to have difficulties with social functioning in the postdeployment period. Perceived lack of support from the military was associated with increased reporting of probable posttraumatic stress disorder (PTSD) and alcohol misuse. Low levels of non-military postdeployment social support and participation were associated with increased reporting of common mental disorder, probable PTSD, and alcohol misuse., Conclusions: Many Reservists find the transition from military deployment to civilian life difficult. Differences in postdeployment experiences may explain some of the increased rates of mental ill health among Reservists., (Copyright © 2011 Elsevier Inc. All rights reserved.)
- Published
- 2011
- Full Text
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28. What are the consequences of deployment to Iraq and Afghanistan on the mental health of the UK armed forces? A cohort study.
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Fear NT, Jones M, Murphy D, Hull L, Iversen AC, Coker B, Machell L, Sundin J, Woodhead C, Jones N, Greenberg N, Landau S, Dandeker C, Rona RJ, Hotopf M, and Wessely S
- Subjects
- Adult, Alcoholism epidemiology, Cohort Studies, Female, Humans, Male, Middle Aged, Prevalence, Socioeconomic Factors, Stress Disorders, Post-Traumatic epidemiology, Surveys and Questionnaires, United Kingdom epidemiology, Afghan Campaign 2001-, Iraq War, 2003-2011, Mental Disorders epidemiology, Military Personnel psychology
- Abstract
Background: Concerns have been raised about the psychological effect of continued combat exposure and of repeated deployments. We examined the consequences of deployment to Iraq and Afghanistan on the mental health of UK armed forces from 2003 to 2009, the effect of multiple deployments, and time since return from deployment., Methods: We reassessed the prevalence of probable mental disorders in participants of our previous study (2003-05). We also studied two new randomly chosen samples: those with recent deployment to Afghanistan, and those who had joined the UK armed forces since April, 2003, to ensure that the final sample continued to be representative of the UK armed forces. Between November, 2007, and September, 2009, participants completed a questionnaire about their deployment experiences and health outcomes., Findings: 9990 (56%) participants completed the study questionnaire (8278 regulars, 1712 reservists). The prevalence of probable post-traumatic stress disorder was 4.0% (95% CI 3.5-4.5; n=376), 19.7% (18.7-20.6; n=1908) for symptoms of common mental disorders, and 13.0% (12.2-13.8; n=1323) for alcohol misuse. Deployment to Iraq or Afghanistan was significantly associated with alcohol misuse for regulars (odds ratio 1.22, 95% CI 1.02-1.46) and with probable post-traumatic stress disorder for reservists (2.83, 1.23-6.51). Regular personnel in combat roles were more likely than were those in support roles to report probable post-traumatic stress disorder (1.87, 1.26-2.78). There was no association with number of deployments for any outcome. There was some evidence for a small increase in the reporting of probable post-traumatic stress disorder with time since return from deployment in regulars (1.13, 1.03-1.24)., Interpretation: Symptoms of common mental disorders and alcohol misuse remain the most frequently reported mental disorders in UK armed forces personnel, whereas the prevalence of probable post-traumatic stress disorder was low. These findings show the importance of continued health surveillance of UK military personnel., Funding: UK Ministry of Defence., (Copyright 2010 Elsevier Ltd. All rights reserved.)
- Published
- 2010
- Full Text
- View/download PDF
29. Gulf war illnesses.
- Author
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Wessely S, Greenberg N, Woodhead C, and Fear NT
- Subjects
- Humans, United Kingdom, Gulf War, Military Personnel, Stress, Psychological etiology
- Published
- 2009
- Full Text
- View/download PDF
30. The health of UK military personnel who deployed to the 2003 Iraq war: a cohort study.
- Author
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Hotopf M, Hull L, Fear NT, Browne T, Horn O, Iversen A, Jones M, Murphy D, Bland D, Earnshaw M, Greenberg N, Hughes JH, Tate AR, Dandeker C, Rona R, and Wessely S
- Subjects
- Cohort Studies, Humans, Iraq, Surveys and Questionnaires, United Kingdom epidemiology, Health Status, Mental Disorders etiology, Military Personnel, Stress Disorders, Post-Traumatic etiology, Warfare
- Abstract
Background: Concerns have been raised about the mental and physical health of UK military personnel who deployed to the 2003 war in Iraq and subsequent tours of duty in the country., Methods: We compared health outcomes in a random sample of UK armed forces personnel who were deployed to the 2003 Iraq war with those in personnel who were not deployed. Participants completed a questionnaire covering the nature of the deployment and health outcomes, which included symptoms of post-traumatic stress disorder, common mental disorders, general wellbeing, alcohol consumption, physical symptoms, and fatigue., Findings: The participation rate was 62.3% (n=4722) in the deployed sample, and 56.3% (n=5550) in the non-deployed sample. Differences in health outcomes between groups were slight. There was a modest increase in the number of individuals with multiple physical symptoms (odds ratio 1.33; 95% CI 1.15-1.54). No other differences between groups were noted. The effect of deployment was different for reservists compared with regulars. In regulars, only presence of multiple physical symptoms was weakly associated with deployment (1.32; 1.14-1.53), whereas for reservists deployment was associated with common mental disorders (2.47, 1.35-4.52) and fatigue (1.78; 1.09-2.91). There was no evidence that later deployments, which were associated with escalating insurgency and UK casualties, were associated with poorer mental health outcomes., Interpretation: For regular personnel in the UK armed forces, deployment to the Iraq war has not, so far, been associated with significantly worse health outcomes, apart from a modest effect on multiple physical symptoms. There is evidence of a clinically and statistically significant effect on health in reservists.
- Published
- 2006
- Full Text
- View/download PDF
31. Effect of color coding and subtraction on the accuracy of contrast echocardiography.
- Author
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Pasquet A, Greenberg N, Brunken R, Thomas JD, and Marwick TH
- Subjects
- Coronary Circulation, Feasibility Studies, Female, Humans, Injections, Intravenous, Male, Middle Aged, Radiopharmaceuticals administration & dosage, Reproducibility of Results, Severity of Illness Index, Technetium Tc 99m Sestamibi administration & dosage, Tomography, Emission-Computed, Single-Photon, Contrast Media administration & dosage, Echocardiography methods, Ferric Compounds administration & dosage, Image Processing, Computer-Assisted, Iron administration & dosage, Myocardial Infarction diagnostic imaging, Oxides administration & dosage
- Abstract
Background: Contrast echocardiography may be used to assess myocardial perfusion. However, gray scale assessment of myocardial contrast echocardiography (MCE) is difficult because of variations in regional backscatter intensity, difficulties in distinguishing varying shades of gray, and artifacts or attenuation. We sought to determine whether the assessment of rest myocardial perfusion by MCE could be improved with subtraction and color coding., Methods and Results: MCE was performed in 31 patients with previous myocardial infarction with a 2nd generation agent (NC100100, Nycomed AS), using harmonic triggered or continuous imaging and gain settings were kept constant throughout the study. Digitized images were post processed by subtraction of baseline from contrast data and colorized to reflect the intensity of myocardial contrast. Gray scale MCE alone, MCE images combined with baseline and subtracted colorized images were scored independently using a 16 segment model. The presence and severity of myocardial contrast abnormalities were compared with perfusion defined by rest MIBI-SPECT. Segments that were not visualized by continuous (17%) or triggered imaging (14%) after color processing were excluded from further analysis. The specificity of gray scale MCE alone (56%) or MCE combined with baseline 2D (47%) was significantly enhanced by subtraction and color coding (76%, p<0.001) of triggered images. The accuracy of the gray scale approaches (respectively 52% and 47%) was increased to 70% (p<0.001). Similarly, for continuous images, the specificity of gray scale MCE with and without baseline comparison was 23% and 42% respectively, compared with 60% after post processing (p<0.001). The accuracy of colorized images (59%) was also significantly greater than gray scale MCE (43% and 29%, p<0.001). The sensitivity of MCE for both acquisitions was not altered by subtraction., Conclusion: Post-processing with subtraction and color coding significantly improves the accuracy and specificity of MCE for detection of perfusion defects.
- Published
- 1999
- Full Text
- View/download PDF
32. Effect of supplements of partially hydrolyzed guar gum on the occurrence of constipation and use of laxative agents.
- Author
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Patrick PG, Gohman SM, Marx SC, DeLegge MH, and Greenberg NA
- Subjects
- Aged, Aged, 80 and over, Cathartics administration & dosage, Cross-Over Studies, Dietary Fiber administration & dosage, Dietary Fiber adverse effects, Female, Flatulence etiology, Galactans administration & dosage, Galactans adverse effects, Homes for the Aged, Humans, Male, Mannans administration & dosage, Mannans adverse effects, Middle Aged, Nursing Homes, Plant Gums, Prospective Studies, Cathartics therapeutic use, Constipation prevention & control, Dietary Fiber therapeutic use, Dietary Supplements, Galactans therapeutic use, Mannans therapeutic use
- Published
- 1998
- Full Text
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33. Recent advances in the development of animal and cell culture models for prostate cancer research A minireview.
- Author
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Bosland MC, Chung LW, Greenberg NM, Ho SM, Isaacs JT, Lane K, Peehl DM, Thompson TC, van Steenbrugge GJ, and van Weerden WM
- Published
- 1996
- Full Text
- View/download PDF
34. Transgenic models for prostate cancer research.
- Author
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Greenberg NM
- Abstract
The ability to introduce novel or specifically altered genes into the germ line of mice and directly perturb gene expression in a specific tissue can facilitate characterization of the molecular mechanisms governing transformation of differentiating tissue within the context of an intact developing animal. Transgenics provide a powerful and remarkably flexible system that can be used to study the cooperation between proto-oncogenes, tumor suppressor genes, and other epigenetic factors in the development of cancer.
- Published
- 1996
- Full Text
- View/download PDF
35. A method for the determination of histidine in blood.
- Author
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BALDRIDGE RC and GREENBERG N
- Subjects
- Humans, Blood Chemical Analysis, Histidine
- Published
- 1963
36. Dihydrofolate reductase activity and loss of resistance in an antifolate-resistant subline of leukemia L1210 after discontinuation of treatment.
- Author
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Schrecker AW, Mead JA, Greenberg NH, and Goldin A
- Subjects
- Animals, Cell Line drug effects, Cell Line enzymology, Drug Resistance, Male, Methotrexate pharmacology, Mice, Leukemia L1210 enzymology, Tetrahydrofolate Dehydrogenase analysis
- Published
- 1970
- Full Text
- View/download PDF
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