BinICC: A function for calculating the intracluster correlation...

In swdpwr: Power Calculation for Stepped Wedge Cluster Randomized Trials

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)

swdpwr documentation built on Oct. 8, 2024, 9:06 a.m.