AHRQ: Agency for Healthcare Research and Quality (US)

Methods Guide for Effectiveness and Comparative Effectiveness Reviews

Methods Guide for Medical Test Reviews

Canada's Drug Agency (CA)

HTA Guidelines and Methods

Centre for Evidence-based Medicine (UK)

Resources

Cochrane Collaboration (UK)

Handbook

Methods Groups

CRD: Centre for Reviews and Dissemination (UK)

Systematic Reviews Guidance

PROSPERO international register of systematic reviews

Drug Effectiveness Review Project (US)

McDonagh, MS, Jonas DE, Gartlehner G, Little A, Peterson K, Carson S, Gibson M, Helfand, M. Methods for the Drug Effectiveness Review Project. BMC Med Res Methodol, 2012, 12(1):140.

National Academies (US)

Finding What Works in Health Care: Standards for Systematic Reviews

NICE: National Institute for Health and Clinical Excellence (UK)

Guidelines Manual 

Pacific Northwest Evidence-based Practice Center (US)

Nelson, Heidi D. 2025. Systematic Reviews to Answer Health Care Questions. Second edition. Philadelphia, PA: Wolters Kluwer.