cpain {sanon}

Chronic Pain Data

Description

The data are from a multicenter randomized clinical trial to compare test and control treatments for the management of chronic pain, and they have had previous consideration in Stokes et al. (2000, chap. 13).

Usage

data(cpain)

Format

A data frame with 193 observations and 4 variables

Details

treat

a factor with levels active and placebo for treatment

response

a factor with five levels poor, fair, moderate, good and excel for pain status after treatment for 4 weeks

center

a factor with two levels I and II for two centers

diagnosis

a factor with four levels A, B, C, and D for diagnoses

References

Stokes, M. E., Davis, C. S., and Koch, G. G. (2000), Categorical Data Analysis using the SAS System, Cary: SAS Publishing.