Or population of interest The relative risk (RR) is the risk of the event in an experimental group relative to that in a control group The odds ratio (OR) is the odds of an event in an experimental group relative to that in a control group An RR or OR of 100 indicates that the risk is comparable in the two groups A value greater than 100 As such, casecontrol studies, by simple virtue of the fact that ratios of outcomes are controlled, cannot have a risk ratio reported Secondly, as with all the statistics discussed herein, RR is a relative measure, providing information about the risk in one group relative to another The problem here is that a study where two groups had a risk of 02% and 01% bearsTherefore, odds ratios from most casecontrol studies can be interpreted as risk ratios However, if a study outcome is common, the odds ratio will be further from 1 than the risk ratio There is debate regarding the merits of risk
Case Control And Cohort Studies A Brief Overview Students 4 Best Evidence
