Question: Kabat-Zinn et al. designed a study to determine the effectiveness of a group stress reduction program based on mindfulness meditation for patients with anxiety disorders {Kabat-Zinn J, Massion AO, Kristeller J, Peterson LG, Fletcher KE, Pbert L, Lenderking WR, Santorelli SF: Effectiveness of a meditation-based stress reduction program in the treatment of anxiety disorders. American Journal of Psychiatry 1992;149:936-943.}. The subjects were selected from those referred to a stress reduction and relaxation program. Among the data collected were the scores made on the Hamilton Rating Scale for Anxiety at four different points in time: initial recruitment (IR), pretreatment (Pre), post-treatment (Post), and three-month follow-up (3M). Compute the ANOVA using a = 0.05.