In other words, the relative reduction in risk of death is always less than the hazard ratio implies It is also a decreasing function of the time point at which it is assessed For instance, in the example in Figure 1 , a 40% hazard reduction implies risk reductions of 25% and only 14% in the 1year and 2year mortality rates, respectivelyThere can be substantial difference in the association of a risk factor with prevalent disease versus ;The risk difference of A relative to B is 001, the risk ratio is 101 Or one could view the risk ratio and the odds ratio as approximations to the hazard ratio or rate ratio Rates and hazards can exceed 1, unlike risks, so there's no constraint on the hazard ratio, unlike the risk ratio
Hazard Ratios And Survival Curves Youtube
