Effects of CFQ practice on physical and mental function. Changes from baseline in (A) SF- physical, and (B) SF-mental scores in immediate and delayed qigong practice groups compared to the wait-list/usual care control. Values are means for the (•) usual care, (◇) immediate practice and (Δ) delayed practice groups. Numbers at bottom of panels indicate mean (SD) values for respective groups. Between-group P-values indicated within the figure. B, baseline; mo, month.