Once you have experiments with different durations, different dropout patterns or different event time distributions, a hazard ratio might be constant across experiments and is probably the better relative risk measure, but an odds or risk ratio will essentially never be (even if the hazard ratio is, while the same odds ratio would correspond to different hazard ratios across experiments) Hazard ratio = (hazard rate in intervention group) / (hazard rate in control group) The hazard ratio interpretation is a little clunky It tells you the risk of an event in the intervention group compared with the control group at any particular point in time The relative risk is different from the odds ratio, although the odds ratio asymptotically approaches the relative risk for small probabilities of outcomesIf IE is substantially smaller than IN, then IE/(IE IN) IE/IN Similarly, if CE is much smaller than CN, then CE/(CN CE) CE/CN Thus, under the rare disease assumption = () () = In practice the odds ratio is
Definition And Calculation Of Odds Ratio Relative Risk Stomp On Step1
