sebor {sanon}

Seborrheic Dermatitis Data

Description

The data are from a randomized clinical trial to compare a test treatment to placebo for a seborrheic dermatitis, and listings of the data appear in Ramaswamy, Koch, and Amara (1997). The variables are as follows:

Usage

data(sebor)

Format

A data frame with 167 observations and 8 variables.

Details

center

a factor vector for eight centers

treat

a factor with levels placebo and test for placebo and test treatments, resectively

score1

a numeric vector for patient global scores for the face according to 6 categories (0 = cleared, 1 = excellent improvement, 2 = moderate improvement, 3 = slight improvement, 4 = no change, 5 = exacerbation)

score2

a numeric vector for patient global scores for the scalp with same categories as score1

score3

a numeric vector for patient global scores for the chest with same categories as score1

severity1

a numeric vector for the baseline desease severity for the face according to 3 categories (1 = mild, 2 = moderate, 3 = severe)

severity2

a numeric vector for the baseline desease severity for the scalp with same categories as severity1

severity3

a numeric vector for the baseline desease severity for the chest with same categories as severity1

References

Ramaswamy R, Koch G, Amara I (1997). "Application of rank analysis of covariance methods to analysis of multiple anatomical regions with treatment for seborrheic dermatitis." Journal of Biopharmaceutical Statistics, 7(3), 403–416.