The data correspond to an experiment in which a treatment for depression is
studied. Two groups of patients (1: control / 2: treatment) have been
followed at five different times (0: pre-test, 1: one month post-test, 3: 3
months follow-up and 6: 6 months follow-up). The dependent variable is a
depression score.
Repeated measures ANOVA can be performed in order to determine the effect
of the treatment and the effect of time on the depression score.