Assessing the quality of reports of randomised trials: implications for the conduct of meta-analyses.

1 Thomas C Chalmers Centre for Systematic Reviews, Children’s Hospital of Eastern Ontario Research Institute, Canada 2 Department of Pediatrics, University of Ottawa, Canada 3 Department of Clinical Epidemiology and Biostatistics, McMaster University, Canada 4 Health Information Research Unit, Department of Clinical Epidemiology and Biostatistics, McMaster University, Canada 5 Department of Medicine, University of Ottawa, Canada 6 Division of Public Health and Primary Health Care, Institute of Health Sciences, University of Oxford, UK