G
George A. Wells
Researcher at University of Ottawa
Publications - 1004
Citations - 132992
George A. Wells is an academic researcher from University of Ottawa. The author has contributed to research in topics: Randomized controlled trial & Population. The author has an hindex of 149, co-authored 941 publications receiving 114256 citations. Previous affiliations of George A. Wells include Cochrane Collaboration & Ottawa Hospital.
Papers
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The Newcastle-Ottawa Scale (NOS) for Assessing the Quality of Nonrandomised Studies in Meta-Analyses
TL;DR: The Newcastle-Ottawa Scale (NOS) as discussed by the authors was developed to assess the quality of nonrandomised studies with its design, content and ease of use directed to the task of incorporating the quality assessments in the interpretation of meta-analytic results.
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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,Jelena Savović,Jelena Savović,Nancy D. Berkman,Meera Viswanathan,David Henry,Douglas G. Altman,Mohammed T. Ansari,Isabelle Boutron,James R. Carpenter,An-Wen Chan,Rachel Churchill,Jonathan J Deeks,Asbjørn Hróbjartsson,Jamie J Kirkham,Peter Jüni,Yoon K. Loke,Theresa D Pigott,Craig R Ramsay,Deborah L. Regidor,Hannah R. Rothstein,Lakhbir Sandhu,Pasqualina Santaguida,Holger J. Schünemann,Beverly Shea,Ian Shrier,Peter Tugwell,Lucy Turner,Jeffrey C. Valentine,Hugh Waddington,Elizabeth Waters,George A. Wells,Penny Whiting,Julian P T Higgins +35 more
TL;DR: Risk of Bias In Non-randomised Studies - of Interventions is developed, a new tool for evaluating risk of bias in estimates of the comparative effectiveness of interventions from studies that did not use randomisation to allocate units or clusters of individuals to comparison groups.
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A multicenter, randomized, controlled clinical trial of transfusion requirements in critical care. Transfusion Requirements in Critical Care Investigators, Canadian Critical Care Trials Group.
Paul C. Hébert,George A. Wells,Morris A. Blajchman,John C. Marshall,Claudio Martin,Giuseppe Pagliarello,Martin Tweeddale,Irwin Schweitzer,Elizabeth Yetisir +8 more
TL;DR: A restrictive strategy of red-cell transfusion is at least as effective as and possibly superior to a liberal transfusion strategy in critically ill patients, with the possible exception of patients with acute myocardial infarction and unstable angina.
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AMSTAR 2: a critical appraisal tool for systematic reviews that include randomised or non-randomised studies of healthcare interventions, or both
Beverley Shea,Beverley Shea,Barnaby C Reeves,George A. Wells,Micere Thuku,Candyce Hamel,Julian Moran,David Moher,David Moher,Peter Tugwell,Vivian Welch,Elizabeth Kristjansson,David Henry,David Henry +13 more
TL;DR: This paper reports on the updating of AMSTAR and its adaptation to enable more detailed assessment of systematic reviews that include randomised or non-randomised studies of healthcare interventions, or both.
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Development of AMSTAR: a measurement tool to assess the methodological quality of systematic reviews
Beverley Shea,Jeremy M. Grimshaw,George A. Wells,Maarten Boers,Neil Andersson,Candyce Hamel,Ashley C Porter,Peter Tugwell,David Moher,Lex M. Bouter +9 more
TL;DR: A measurement tool for the 'assessment of multiple systematic reviews' (AMSTAR) was developed that consists of 11 items and has good face and content validity for measuring the methodological quality of systematic reviews.