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Bawor M, Dennis BB, Varenbut M, Daiter J, Marsh DC, Plater C, Worster A, Steiner M, Anglin R, Pare G, Desai D, Thabane L, Samaan Z. Sex differences in substance use, health, and social functioning among opioid users receiving methadone treatment: a multicenter cohort study. Biol Sex Differ 2015; 6:21. [PMID: 26557977 PMCID: PMC4640383 DOI: 10.1186/s13293-015-0038-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 10/05/2015] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Despite the growing numbers of men and women with opioid use disorder in Canada, sex-specific issues in treatment have not been re-examined in the current population of patients with opioid addiction. We aimed to evaluate sex differences in substance use, health, and social functioning among men and women currently receiving methadone treatment for opioid use disorder in Ontario, Canada. METHODS We recruited 503 participants with opioid dependence disorder receiving methadone maintenance treatment. We collected data on demographics, treatment characteristics, psychiatric history, addiction severity, and drug use patterns through urinalysis. We performed adjusted univariate analyses and logistic regression to identify distinct factors affecting men and women. RESULTS Among our sample of 54 % (n = 266) men and 46 % women (n = 226) with mean age 38.3 years, less than half of participants were employed (35.6 %) and married (31.8 %) and had completed a high school education (27.9 %). Compared to men, women had frequent physical and psychological health problems, family history of psychiatric illness, and childcare responsibilities and began using opioids through a physician prescription. Men had higher rates of employment, cigarette smoking, and cannabis use compared to women. CONCLUSIONS Our results have revealed different patterns of substance use, health, and social functioning among men and women currently receiving methadone treatment for opioid addiction in Ontario, Canada. This information can be used to develop an integrative treatment regimen that caters to the individual needs of men and women, as well as to inform methadone treatment protocols to include specialized services (including vocational counseling, childcare and parenting assistance, medical assistance, relationship or domestic violence counseling, etc.) and increase their availability and accessibility on a larger scale.
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Affiliation(s)
- Monica Bawor
- />MiNDS Neuroscience Graduate Program, McMaster University, Hamilton, Ontario Canada
- />St. George’s, University of London, London, UK
- />Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton, Ontario Canada
- />Peter Boris Centre for Addiction Research, St. Joseph’s Healthcare Hamilton, Hamilton, Ontario Canada
| | - Brittany B. Dennis
- />St. George’s, University of London, London, UK
- />Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton, Ontario Canada
- />Peter Boris Centre for Addiction Research, St. Joseph’s Healthcare Hamilton, Hamilton, Ontario Canada
- />Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario Canada
| | - Michael Varenbut
- />Canadian Addiction Treatment Centres (CATC), Richmond Hill, Ontario Canada
| | - Jeff Daiter
- />Canadian Addiction Treatment Centres (CATC), Richmond Hill, Ontario Canada
| | - David C. Marsh
- />Canadian Addiction Treatment Centres (CATC), Richmond Hill, Ontario Canada
- />Northern Ontario School of Medicine, Laurentian Campus, Sudbury, Ontario Canada
| | - Carolyn Plater
- />Canadian Addiction Treatment Centres (CATC), Richmond Hill, Ontario Canada
| | - Andrew Worster
- />Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario Canada
- />Canadian Addiction Treatment Centres (CATC), Richmond Hill, Ontario Canada
- />Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Meir Steiner
- />Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario Canada
- />Women’s Health Concerns Clinic, St. Joseph’s Healthcare Hamilton, Hamilton, Ontario Canada
- />Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario Canada
| | - Rebecca Anglin
- />Department of Medicine, McMaster University, Hamilton, Ontario Canada
- />Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario Canada
| | - Guillaume Pare
- />Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton, Ontario Canada
- />Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario Canada
| | - Dipika Desai
- />Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton, Ontario Canada
| | - Lehana Thabane
- />Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario Canada
- />Biostatistics Unit, Centre for Evaluation of Medicine, Hamilton, Ontario Canada
| | - Zainab Samaan
- />Population Genomics Program, Chanchlani Research Centre, McMaster University, Hamilton, Ontario Canada
- />Peter Boris Centre for Addiction Research, St. Joseph’s Healthcare Hamilton, Hamilton, Ontario Canada
- />Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario Canada
- />Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario Canada
- />Mood Disorders Program, St. Joseph’s Healthcare, 100 West 5th Street, Hamilton, Ontario L8N 3K7 Canada
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Bawor M, Dennis BB, Bhalerao A, Plater C, Worster A, Varenbut M, Daiter J, Marsh DC, Desai D, Steiner M, Anglin R, Pare G, Thabane L, Samaan Z. Sex differences in outcomes of methadone maintenance treatment for opioid use disorder: a systematic review and meta-analysis. CMAJ Open 2015; 3:E344-51. [PMID: 26457294 PMCID: PMC4596116 DOI: 10.9778/cmajo.20140089] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Opioid use disorder is a serious international concern with limited treatment success. Men and women differ in their susceptibility to opioid use disorder and response to methadone treatment and can therefore benefit from sex-specific treatment. We performed a systematic review of the literature on outcomes of methadone maintenance treatment for opioid use disorder in men and women related to drug use, health status and social functioning. METHODS We searched PubMed, Embase, PsycINFO and CINAHL for observational or randomized controlled studies involving adults 18 years of age or older undergoing methadone treatment for opioid use disorder. Studies were included if they investigated sex differences in methadone treatment outcomes. Two authors independently reviewed and extracted data. Meta-analyses were performed when possible; risk of bias and quality of evidence were also assessed. RESULTS Twenty studies with 9732 participants were included, of which 18 were observational and 2 were randomized controlled trials. Men and women differed significantly in alcohol use (odds ratio [OR] 0.52, 95% confidence interval [CI] 0.31 to 0.86), amphetamine use (OR 1.47, 95% CI 1.12 to 1.94), legal involvement (OR 0.63, 95% CI 0.47 to 0.84) and employment during treatment (OR 0.39, 95% CI 0.21 to 0.73). Opioid use patterns were similar among men and women. Risk of bias was moderate, and quality of evidence was generally low. INTERPRETATION Sex differences were evident in polysubstance use, legal involvement and employment status among men and women receiving methadone treatment for opioid use disorders. Although the quality of evidence was low, our review highlights the need for improved implementation of sex-specific treatment strategies.
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Affiliation(s)
- Monica Bawor
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Brittany B Dennis
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Anuja Bhalerao
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Carolyn Plater
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Andrew Worster
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Michael Varenbut
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Jeff Daiter
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - David C Marsh
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Dipika Desai
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Meir Steiner
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Rebecca Anglin
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Guillaume Pare
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Lehana Thabane
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
| | - Zainab Samaan
- MiNDS Neuroscience Graduate Program (Bawor), McMaster University, Hamilton, Ont.; Population Genomics Program (Bawor, Dennis, Desai, Pare, Samaan), Chanchlani Research Centre, McMaster University, Hamilton, Ont.; Department of Clinical Epidemiology and Biostatistics (Dennis, Pare, Thabane), McMaster University, Hamilton, Ont.; Bachelor of Health Sciences Undergraduate Program (Bhalerao), McMaster University, Hamilton, Ont.; Ontario Addiction Treatment Centre (Plater, Worster, Varenbut, Daiter), Richmond Hill, Ont.; Department of Medicine (Worster, Marsh, Anglin), McMaster University, Hamilton, Ont.; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Department of Psychiatry and Behavioural Neurosciences (Steiner, Anglin, Samaan), McMaster University, Hamilton, Ont.; Women's Health Concerns Clinic (Steiner), St. Joseph's Healthcare Hamilton, Hamilton, Ont.; Department of Obstetrics and Gynecology (Steiner), McMaster University, Hamilton, Ont.; Biostatistics Unit (Thabane), Centre for Evaluation of Medicine, Hamilton, Ont.; Peter Boris Centre for Addiction Research (Samaan), St. Joseph's Healthcare Hamilton, Hamilton, Ont
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