Anaes Vivas · Measurement & monitoring physics
Data viva — the hierarchy of evidence pyramid
A Primary data viva - read the evidence pyramid; for each tier give the design, its measure of effect (odds ratio, relative risk, prevalence, number needed to treat), and its main bias; state why the RCT is the gold standard for therapy and how a meta-analysis pools its evidence.
On this page
Study tools
Target exams
ANZCAFRCAABAEDAIC
Prompt
A diagram shows the evidence hierarchy pyramid, labelled tier by tier from expert opinion at the base through case reports, case-control and cohort studies to randomised controlled trials, with systematic reviews and meta-analyses at the apex. For each tier, state the study design, its measure of effect, and its principal source of bias.
Stimulus
A diagram shows the evidence hierarchy pyramid, labelled tier by tier from expert opinion at the base through case reports, case-control and cohort studies to randomised controlled trials, with systematic reviews and meta-analyses at the apex. For each tier, state the study design, its measure of effect, and its principal source of bias.[1]
References4ShowHide
- [1]Grimes DA, et al. An overview of clinical research: the lay of the land. Lancet, 2002.PMID 11809203
- [2]Schulz KF, et al. CONSORT 2010 statement: updated guidelines for reporting parallel group randomised trials. BMJ, 2010.PMID 20332509
- [3]Moher D, et al. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. PLoS Med, 2009.PMID 19621072
- [4]Guyatt GH, et al. GRADE: an emerging consensus on rating quality of evidence and strength of recommendations. BMJ, 2008.PMID 18436948