M
Mohammed T. Ansari
Researcher at University of Ottawa
Publications - 77
Citations - 13046
Mohammed T. Ansari is an academic researcher from University of Ottawa. The author has contributed to research in topics: Systematic review & Randomized controlled trial. The author has an hindex of 29, co-authored 64 publications receiving 8042 citations. Previous affiliations of Mohammed T. Ansari include Ottawa Hospital Research Institute & Ottawa Hospital.
Papers
More filters
Journal ArticleDOI
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.
Journal ArticleDOI
How quickly do systematic reviews go out of date? A survival analysis.
TL;DR: This survival analysis of 100 meta-analyses indexed in ACP Journal Club from 1995 to 2005 found that new evidence that substantively changed conclusions about the effectiveness or harms of therapies arose frequently and within relatively short time periods.
Assessing the Risk of Bias of Individual Studies in Systematic Reviews of Health Care Interventions
Meera Viswanathan,Mohammed T. Ansari,Nancy D Berkman,Stephanie Chang,Lisa Hartling,Melissa L McPheeters,P Lina Santaguida,Tatyana Shamliyan,Kavita Singh,Alexander Tsertsvadze,Jonathan Treadwell +10 more
TL;DR: This Guide presents issues key to the development of Comparative Effectiveness Reviews and describes recommended approaches for addressing difficult, frequently encountered methodological issues.
Journal ArticleDOI
The GRADE Working Group clarifies the construct of certainty of evidence
Monica Hultcrantz,David Rind,Elie A. Akl,Shaun Treweek,Reem A. Mustafa,Alfonso Iorio,Brian S. Alper,Joerg J Meerpohl,M. Hassan Murad,Mohammed T. Ansari,Srinivasa Vittal Katikireddi,Pernilla Östlund,Sofia Tranæus,Robin Christensen,Gerald Gartlehner,Jan Brozek,Ariel Izcovich,Holger J. Schünemann,Gordon H. Guyatt +18 more
TL;DR: It is desirable for systematic review authors, guideline panelists, and health technology assessors to specify the threshold or ranges they are using when rating the certainty in evidence.