toenail {weightedScores}

The toenail infection data

Description

The data consist of up to seven binary observations on each of 294 subjects who had been randomly assigned to one of two treatment groups. The observations, taken at regularly scheduled time points, are coded as 1 if the subject's infection was severe and 0 otherwise. The interest is to investigate if the two treatments differ and if the percentage of severe infections decreased over time.

Usage

data(toenail)

Format

A data frame with 1568 observations on the following 4 variables.

idnum

The index for individuals.

treatn

The treatment binary covariate.

y

The subject's infection binary response.

time

The time indicator.

Source

Molenberghs, G., Verbeke, G., 2005. Models for Discrete Longitudinal Data. Springer, NY.