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Fig. 1 | Trials

Fig. 1

From: Limitations of the incidence density ratio as approximation of the hazard ratio

Fig. 1

Coverage probability (CP) by baseline risk for the Gompertz distribution with shape parameter α = 1, sample size N = 1000, relative average follow-up duration in the control group from 30% to 100%, and a true hazard ratio (HR) of 0.4. The shaded area is the range of the CP for the HR over all these 72 scenarios; solid lines represent the CP for the incidence density ratio (IDR) for the different relative average follow-up duration in the control group; the horizontal dashed line marks the desired CP of 0.95

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