R Dataset / Package multgee / arthritis

On this R-data statistics page, you will find information about the arthritis data set which pertains to Rheumatoid Arthritis Clinical Trial. The arthritis data set is found in the multgee R package. You can load the arthritis data set in R by issuing the following command at the console data("arthritis"). This will load the data into a variable called arthritis. If R says the arthritis data set is not found, you can try installing the package by issuing this command install.packages("multgee") and then attempt to reload the data with the library() command. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the arthritis R data set. The size of this file is about 15,141 bytes.

Rheumatoid Arthritis Clinical Trial

Description

Rheumatoid self-assessment scores for 302 patients, measured on a five-level ordinal response scale at three follow-up times.

Usage

data(arthritis)

Format

A data frame with 906 observations on the following 7 variables:

id

Patient identifier variable.

y

Self-assessment score of rheumatoid arthritis measured on a five-level ordinal response scale.

sex

Coded as (1) for female and (2) for male.

age

Recorded at the baseline.

trt

Treatment group variable, coded as (1) for the placebo group and (2) for the drug group.

baseline

Self-assessment score of rheumatoid arthritis at the baseline.

time

Follow-up time recorded in months.

Source

Lipsitz, S.R. and Kim, K. and Zhao, L. (1994) Analysis of repeated categorical data using generalized estimating equations. Statistics in Medicine, 13, 1149–1163.

Examples

data(arthritis)
str(arthritis)

Dataset imported from https://www.r-project.org.

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