BinICC {swdpwr}

A function for calculating the intracluster correlation coefficient (ICC) for binary outcomes given the cluster level random effects variance

Description

This function calculates the ICC (intracluster correlation coeffcient which measures the correlation between individuals in the same cluster) under different link funcitions in a cross-sectional stepped wedge CRT with binary outcomes. This model considers only the fixed time effects and does not include cluster by time interaction random effect.

Usage

BinICC(link = "identity", meanresponse_start, tau2 = 0)

Arguments

link

choose link function from link="identity", link="log" and link="logit", with default value of identity link

meanresponse_start

the anticipated mean response in the control group at the start of the study

tau2

also denoted as sigma_b: variance of the between-cluster random effect, default is 0

Value

The object returned includes the link function and value for the ICC in this study

Examples

BinICC(link="identity",meanresponse_start=0.2,tau2=0.05)