Dataset: brain.dat Source: R. Costain, J.W.T. Redfearn, and O.C.J. Lippold (1964), "A Controlled Trial of the Therapeutic Effects of Polarization of the Brain in Depressive Illness," British Journal of Psychiatry, Vol. 110. pp 786-799. Description: Psychiatrist Rating of depression (Higher ==> More depressed) 2-Period crossover design Variables/Columns Period 8 (Period 1 = Pre-treatment baseline score) Patient id# 15-16 Trt 24 (0=None, 1=Placebo, 2=Polarization current) Psychiatrist Rating 31-32