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Last data update: 2014.03.03

R: Simple Estimation of the Intraclass Correlation Coefficient

ICCbareF

R Documentation

Simple Estimation of the Intraclass Correlation Coefficient

Description

Estimates the Intraclass Correlation Coefficient (ICC) and is meant to be as simple and fast as possible for use in Monte Carlo simulations or bootstrapping. Calculates the variance components 'by hand', instead of using the aov() function.

Usage

ICCbareF(x, y, data)

Arguments

`x`	column name indicating individual or group id in the dataframe `data`
`y`	column name indicating measurements in the dataframe `data`. Each entry in `x` must have at least one non-NA value in `y`
`data`	a dataframe containing `x` and `y`

Details

ICCbareF is distinguished from ICCbare, in that ICCbare is more flexible and can handle missing values and unbalanced datasets. ICCbareF cannot and should only be used on balanced datasets without any NAs.

Value

ICC

the intraclass correlation coefficient

Author(s)

Matthew Wolak matthewwolak@gmail.com