In a clinical study n=127 patients with sport related injuries have been treated with two different therapies (chosen by random design). After 3,7 and 10 days of treatment the pain occuring during knee movement was observed.
A data frame with 127 observations on the following 8 variables.
Therapy ( placebo = 1, treatment = 2)
Age in years
Gender (male = 0, female = 1)
Pain before treatment (no pain = 1, severe pain = 5)
Pain after three days of treatment
Pain after seven days of treatment
Pain after ten days of treatment
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