In biostatistics, strength of evidence is the strength of a conducted study that can be assessed in health care interventions, e.g. to identify effective health care programs and evaluate the quality of the research in health care. It can be graded with different descriptive or analytical statistical methods. Hierarchy of study design, for example using a case-study, ecological study, cross-sectional, case-control, cohort, or experimental, although not always in this order is a general rule to a high "strength of evidence" of a clinical study.
References
- "Grading the Strength of a Body of Evidence when Assessing Health Care Interventions for the Effective Health Care Program of the Agency for Healthcare Research and Quality: An Update". Methods Guide for Effectiveness and Comparative Effectiveness Reviews. AHRQ Methods for Effective Health Care. Agency for Healthcare Research and Quality (US). 2008.
- GRADE Workshop: Grading the Quality of Evidence and Strength of Recommendations. Publications Office. 2014. ISBN 9789279444142.
- Clinical Epidemiology: The Essentials. Lippincott Williams & Wilkins. 31 December 2019. ISBN 9781975109561.
- Nursing Research in Canada - E-Book: Methods, Critical Appraisal, and Utilization. Elsevier Health Sciences. 24 October 2017. ISBN 9781771720946.
- Fletcher, Robert; Fletcher, Suzanne W. (8 January 2013). Clinical Epidemiology: The Essentials. ISBN 9781469826257.