Hollander and Wolfe (1999) presented Hamilton depression scale factor measurements for 9 patients with mixed anxiety and depression. Measurements were taken at a time preceding administration of tranquilizer, and a time after tranquilizer administration.
data(depression)
A data frame with 18 observations on the following 3 variables.
subject
Experimental subject.
scale
Hamilton depression scale score. 0-7 is considered to be normal. Scores of 20 or higher indicate moderate to very severe depression
time
A factor with levels post
pre
indicating before and after tranquilizer treatment.