Skip to main content
. 2014 Sep 1;37(9):1543–1552. doi: 10.5665/sleep.4008

Figure 3.

Figure 3

Change in global sleep quality from baseline to month 16 follow-up in the CBT, TCC, and SS treatment groups. Total scores on the Pittsburgh Sleep Quality Index (PSQI) range from 0 to 21, with higher scores indicating worse sleep quality. Values are means; bars indicate standard error of measurement. Measurements were obtained at baseline and months 2 and 3 (mid-intervention), 4 (post-intervention), and 7 and 16 (follow-up). Shaded area indicates period of administration of intervention following baseline assessment. * Significant linear trend contrasts between CBT vs SS (t522.7 = 2.70; P < 0.01). # Significant linear trend contrasts between CBT vs TCC (t531.3 = 2.64; P < 0.05). + Significant pairwise comparisons between TCC vs SS. CBT, cognitive behavioral therapy; TCC, Tai Chi Chih; SS, sleep seminar.