May 03, · In cohort A, imagingbased progressionfree survival was significantly longer in the olaparib group than in the control group (median, 74 months vs 36 months;Odds ratio, and when by equating the two statistics we are sometimes forcing OR to be something it is not Another statistic, which is often also perceived as a relative risk, is the hazard ratio (HR) We encounter it, for example, when we fit the Cox model to survival data Under proportional hazards it is probably "natural" to thinkThe hazard ratio is simply the value of the hazard calculated from the treatment curve, divided by the hazard calculated from the control curve Based on the complexity, statistical software is required to make this calculation to estimate the hazard ratio Figure 1 The timetoevent curve or KaplinMeier curve
Relative Risks And Odds Ratios What S The Difference Mdedge Family Medicine
