Open this publication in new window or tab >>Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada; Department of Medicine, Division of Nephrology and Hypertension, University of Kansas Medical Center, 3901 Rainbow Blvd, MS3002, Kansas City, KS 66160, USA.
Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada; Department of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
EBSCO Health, EBSCO Publishing, 10 Estes Street, Ipswich, MA, 01938 USA; Department of Family and Community Medicine, School of Medicine, University of Missouri-Columbia, One Hospital Drive, Columbia, MO 65212, USA.
Cochrane Germany, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Strasse 153,79110 Freiburg, Germany; Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité - U1153, Inserm / Université Paris Descartes, Cochrane France.
Mayo Clinic Evidence-based Practice Center, Mayo Clinic, 200 1st Street SW, Rochester, MN 55905, USA.
School of Epidemiology, Public Health and Preventive Medicine, Faculty of Medicine, University of Ottawa, 600 Peter Morand Crescent, Ottawa, Ontario K1G 5Z3, Canada.
MRC/CSO Social & Public Health Sciences Unit, University of Glasgow, 200 Renfield Street, Glasgow, G2 3QB, UK.
Malmö högskola, Faculty of Odontology (OD). Swedish Agency for Health Technology Assessment and Assessment of Social Services (SBU), S:t Eriksgatan 117, SE-102 33, Stockholm, Sweden.
Malmö högskola, Faculty of Odontology (OD). Swedish Agency for Health Technology Assessment and Assessment of Social Services (SBU), S:t Eriksgatan 117, SE-102 33, Stockholm, Sweden; Division of Cariology and Endodontology, Department of Dental Medicine, Karolinska institutet, Alfred Nobels Allé 8, SE-141 52, Huddinge, Sweden.
Musculoskeletal Statistics Unit, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Nordre Fasanvej 57, DK-2000 Copenhagen F, Denmark.
Danube University, Department for Evidence-based Medicine and Clinical Epidemiology, Dr. Karl Dorrekstrasse 30, 3500 Krems, Austria; RTI International, Research Triangle Park, 3040 East Cornwallis Rd, Research Triangle Park 27709, NC, USA.
Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada; Department of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
Internal Medicine Service, German Hospital, Pueyrredón 1640, Buenos Aires C1118AAT, Argentina.
Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada; Department of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
Department of Health Research Methods, Evidence, and Impact, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada; Department of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
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2017 (English)In: Journal of Clinical Epidemiology, ISSN 0895-4356, E-ISSN 1878-5921, Vol. 87, p. 4-13Article in journal (Refereed) Published
Abstract [en]
Objective: To clarify the grading of recommendations assessment, development and evaluation (GRADE) definition of certainty of evidence and suggest possible approaches to rating certainty of the evidence for systematic reviews, health technology assessments, and guidelines. Study Design and Setting: This work was carried out by a project group within the GRADE Working Group, through brainstorming and iterative refinement of ideas, using input from workshops, presentations, and discussions at GRADE Working Group meetings to produce this document, which constitutes official GRADE guidance. Results: Certainty of evidence is best considered as the certainty that a true effect lies on one side of a specified threshold or within a chosen range. We define possible approaches for choosing threshold or range. For guidelines, what we call a fully contextualized approach requires simultaneously considering all critical outcomes and their relative value. Less-contextualized approaches, more appropriate for systematic reviews and health technology assessments, include using specified ranges of magnitude of effect, for example, ranges of what we might consider no effect, trivial, small, moderate, or large effects. Conclusion: 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. (C) 2017 The Authors. Published by Elsevier Inc.
Place, publisher, year, edition, pages
Pergamon Press, 2017
Keywords
GRADE, Certainty of evidence, Thresholds, Guidelines, Systematic reviews, Health technology assessment
National Category
Dentistry
Identifiers
urn:nbn:se:mau:diva-6008 (URN)10.1016/j.jclinepi.2017.05.006 (DOI)000410468800002 ()28529184 (PubMedID)2-s2.0-85021065825 (Scopus ID)25532 (Local ID)25532 (Archive number)25532 (OAI)
2020-02-282020-02-282024-06-17Bibliographically approved