Cannabis use during methadone maintenance treatment for opioid use disorder: a systematic review and meta-analysis

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.

Statistical Sciences Program (McBrien), University of Toronto, Toronto, Ont.; Michael G. DeGroote School of Medicine (Luo), Medical Sciences Graduate Program (Sanger), Neuroscience Graduate Program (Zielinski) and Health Research Methodology Graduate Program (Bhatt), McMaster University, Hamilton, Ont.; St. George’s Hospital Medical School (Zhu), University of London, London, UK; Northern Ontario School of Medicine (Marsh), Sudbury, Ont.; Biostatistics Unit (Thabane), Research Institute at St. Joes, St. Joseph’s Healthcare Hamilton; Departments of Health Research Methods, Evidence and Impact (Thabane, Samaan) and Psychiatry and Behavioural Neurosciences (Samaan), McMaster University, Hamilton, Ont.