Sample Size

Running CompARE:

For each composite component, the user is prompted for the anticipation of: the probability of having the event (or an interval in which this probability takes values); the effect relevant to detect (measured either by the odds ratio, risk ratio or risk difference). The correlation between the components is also required.

For the sample size calculation, the user should provide: the type of variance estimate to be used (unpooled or pooled variance); the type I error; and the desired power.

Input Items:

Output Items: