Missing Data
The final data set included 151 participants, with 76 (50.3%) and 75 (49.7%) participants in the intervention and waitlist control groups, respectively. Of the 76 participants in the intervention group, 39% (n=30) completed both the posttest and follow-up measures, 22% (n=17) provided only 1 of the 2 measures, and 38% (n=29) did not complete either the posttest or follow-up measures. Of the 75 participants in the waitlist control group, 77% (n=58) completed both the posttest and follow-up measures, 16% (n=12) completed only 1 of the 2 measures, and 7% (n=5) did not complete either the posttest or follow-up measures. For each randomization group, a multivariate analysis of variance (MANOVA) was used to assess the differences between complete cases and the cases lost for demographic variables (age and gender) and baseline scores for well-being, quality of life, distress, self-compassion, coping, and difficulties in emotion regulation. For the intervention group, the MANOVA was nonsignificant (