George A. Wells

ROBINS-I: a tool for assessing risk of bias in non-randomised studies of interventions

Jonathan A C Sterne, Miguel A. Hernán, Barnaby C Reeves et al. · BMJ · 2016 · 19K citations · Full text

Public Health, Biostatistics, Health Services Research +15

The Newcastle-Ottawa Scale (NOS) for Assessing the Quality of Nonrandomised Studies in Meta-Analyses

George A. Wells · Medical Entomology and Zoology · 2014 · 17.9K citations · Full text

Public Health, Biostatistics, Clinical Epidemiology +9

AMSTAR 2: a critical appraisal tool for systematic reviews that include randomised or non-randomised studies of healthcare interventions, or both

Beverley Shea, Barnaby C Reeves, George A. Wells et al. · BMJ · 2017 · 10.4K citations · Full text

Public Affairs, Health Policy, Evidence-based Practice +16

A Multicenter, Randomized, Controlled Clinical Trial of Transfusion Requirements in Critical Care

Paul C. Hébert, George A. Wells, Morris A. Blajchman et al. · New England Journal of Medicine · 1999 · 5.2K citations · Full text

Medicine, Hematology, Critical Care Medicine +15

Development of AMSTAR: a measurement tool to assess the methodological quality of systematic reviews

Beverley Shea, Jeremy Grimshaw, George A. Wells et al. · BMC Medical Research Methodology · 2007 · 4.4K citations · Full text

Management, Quality Management, Method Validation +13