On this Picostat.com 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. 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
Rheumatoid self-assessment scores for 302 patients, measured on a five-level ordinal response scale at three follow-up times.
A data frame with 906 observations on the following 7 variables:
Patient identifier variable.
Self-assessment score of rheumatoid arthritis measured on a five-level ordinal response scale.
Coded as (1) for female and (2) for male.
Recorded at the baseline.
Treatment group variable, coded as (1) for the placebo group and (2) for the drug group.
Self-assessment score of rheumatoid arthritis at the baseline.
Follow-up time recorded in months.
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.
Dataset imported from https://www.r-project.org.