Table 4. Effect Sizes for Pairwise Post-Hoc Comparisons ^a,b.

Measure	ACT vs. SSRIs	ACT vs. Combined	Combined vs. SSRIs
Y-BOCS	1.14 c	0.07	1.28 c
AAQ	1.18 c	0.14	1.35 c

^a Abbreviations: AAQ, Acceptance and Action Questionnaire; ACT, Acceptance and commitment therapy; SSRIs, Selective serotonin reuptake inhibitors; and Y-BOCS, Yale-Brown Obsessive-Compulsive Scale.

^b d = Cohen’s effect size (0.2 = small effect, 0.5 = medium effect, 0.8 = large effect).

^c P < 0.001.