Effects of CFQ practice on pain, function and sleep. Change from baseline in (A) numerical rating scale-pain intensity (NRS-PI) score, (B) fibromyalgia impact questionnaire (FIQ) score, and (C) Pittsburgh Sleep Quality Index (PSQI) 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 figure. B, baseline; mo, month.