Scores for the clinical global impression (CGI) measured on an ordinal scale (ranging from 2 to 8) during eight weeks for 16 patients with panic disorder attacks in a psychiatric clinical trial.
A data frame with 80 observations on the following 2 variables.
A numeric vector containing the CGI score.
A numeric vector indicating the week (0,2,4,6,8) of measurement.
Note that the first observation in each week corresponds to the first patient, the second one to the second patient, and so on. There are 5 repeated measures per patient.
Brunner, E., Domhof, S., Langer, F. (2002): Nonparametric Analysis of Longitudinal Data in Factorial Experiments. Wiley, New York.