G
Gordon H. Guyatt
Researcher at McMaster University
Publications - 1749
Citations - 262329
Gordon H. Guyatt is an academic researcher from McMaster University. The author has contributed to research in topics: Randomized controlled trial & Medicine. The author has an hindex of 231, co-authored 1620 publications receiving 228631 citations. Previous affiliations of Gordon H. Guyatt include Memorial Sloan Kettering Cancer Center & Cayetano Heredia University.
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Journal ArticleDOI
Antithrombotic and Thrombolytic Therapy: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition)
TL;DR: The new and updated recommendations are provided and several important changes that are made in the guideline development process are reviewed, including an attempt to increase the participation of female authors and contributors from outside North America.
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Effects of Dietary Calcium Supplementation on Blood Pressure: A Meta-analysis of Randomized Controlled Trials
Heiner C. Bucher,Richard J. Cook,Gordon H. Guyatt,Jefferey D. Lang,Deborah J. Cook,Rose Hatala,Dereck L. Hunt +6 more
TL;DR: Calcium supplementation may lead to a small reduction in systolic but not diastolic blood pressure, and further studies should address the hypothesis that inadequate calcium intake is associated with increased blood pressure that can be corrected with calcium supplementation.
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Credibility of claims of subgroup effects in randomised controlled trials: systematic review
Xin Sun,Matthias Briel,Matthias Briel,Jason W. Busse,John J. You,Elie A. Akl,Elie A. Akl,Filip Mejza,Malgorzata M Bala,Dirk Bassler,Dominik Mertz,Natalia Diaz-Granados,Per Olav Vandvik,Per Olav Vandvik,Germán Málaga,Sadeesh Srinathan,Philipp Dahm,Bradley C. Johnston,Bradley C. Johnston,Pablo Alonso-Coello,Basil Hassouneh,Stephen D. Walter,Diane Heels-Ansdell,Neera Bhatnagar,Douglas G. Altman,Gordon H. Guyatt +25 more
TL;DR: The credibility of authors’ claims of subgroup effects, even when claims are strong, is usually low and users of the information should treat claims that fail to meet most criteria with scepticism.
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Meta-analyses of therapies for postmenopausal osteoporosis. VIII: Meta-analysis of the efficacy of vitamin D treatment in preventing osteoporosis in postmenopausal women.
Emmanuel A. Papadimitropoulos,George Wells,Beverley Shea,William J Gillespie,Bruce Weaver,Nicole Zytaruk,Ann Cranney,Jonathan D. Adachi,Peter Tugwell,Robert G. Josse,Carol E. Greenwood,Gordon H. Guyatt +11 more
TL;DR: Vitamin D decreases vertebral fractures and may decrease nonvertebral fractures, and the available data are uninformative regarding the relative effects of standard and hydroxylated vitamin D.
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Clinical impact versus factor analysis for quality of life questionnaire construction
TL;DR: Two philosophically different methods for selecting items for a disease-specific quality of life questionnaire are compared, the impact method selects items that are most frequently perceived as important by patients whereas the psychometric method (factor analysis) selects items primarily according to their relationships with one another.