Subgroup analyses are seldom possible and subgroup effects are rare in Cochrane HIV systematic reviews

Affiliations

• ¹ Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada; Biostatistics Unit, Father Sean O'Sullivan Research Centre, St Joseph's Healthcare Hamilton, Hamilton, Ontario L8N 4A6, Canada; Centre for the Development of Best Practices in Health, Yaoundé, Cameroon. Electronic address: mbuagblc@mcmaster.ca.
• ² Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada.
• ³ The Ontario HIV Treatment Network, Toronto, Ontario, Canada.
• ⁴ Bachelor of Health Sciences (Honors) Program, McMaster University, Hamilton, Ontario, Canada.
• ⁵ Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada.
• ⁶ Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada; Biostatistics Unit, Father Sean O'Sullivan Research Centre, St Joseph's Healthcare Hamilton, Hamilton, Ontario L8N 4A6, Canada; Departments of Paediatrics and Anaesthesia, McMaster University, Hamilton, Ontario, Canada; Centre for Evaluation of Medicine, St Joseph's Healthcare, Hamilton, Ontario, Canada; Population Health Research Institute, Hamilton Health Sciences, Hamilton, Ontario, Canada.