resp {sanon}

Respiratory Disorder Data

Description

The data are from a randomized clinical trial to compare a test treatment to placebo for a respiratory disorder, and listings of the data appear in Stokes et al. (2000, chap. 15, pp. 495-496) and Koch et al. (1990). The variables are as follows:

Usage

data(resp)

Format

A data frame with 111 observations and 9 variables.

Details

center

a factor vector for two centers

treatment

a factor with levels A and P for active and placebo treatments, respectively

sex

a factor with levels F and M for female and male, respectively

age

a numeric vector for age

baseline

a numeric vector for patient global ratings of symptom control according to 5 categories (4 = excellent, 3 = good, 2 = fair, 1 = poor, 0 = terrible) at baseline measurement

visit1

a numeric vector for patient global ratings of symptom control at visit 1 with same categories as baseline

visit2

a numeric vector for patient global ratings of symptom control at visit 2 with same categories as baseline

visit3

a numeric vector for patient global ratings of symptom control at visit 3 with same categories as baseline

visit4

a numeric vector for patient global ratings of symptom control at visit 4 with same categories as baseline

References

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

Koch, G. G., Carr, G. J., Amara, I. A., Stokes, M. E., and Uryniak, T. J. (1990), "Categorical Data Analysis," in Statistical Methodology in Pharmaceutical Sciences, ed. D. A. Berry, New York: Marcel Dekker, pp. 291-475.