7.2 Reviews of evidence Flashcards
1
Q
gold standard trial for a new intervention
A
randomised control trial
2
Q
explain how a pooled estimated OR is calculated for studies?
A
ORs and CIs calculated for each study
combined = pooled estimated OR
weight studies according to size and uncertainty of OR
3
Q
how are meta analyses displayed?
A
forest plots
4
Q
what is heterogeneity of studies?
A
observed effects in studies are more different than would be expected by chance
5
Q
what causes heterogeneity between studies?
A
differences in study design
differences in patients, interventions, outcomes
6
Q
order studies from most to least prone to bias + confounding
A
case control
cohort
non randomised controlled
randomised controlled
