Table 3.

Estimated marginal means (SDs), and effect sizes for symptom change at minimal dose (Session 3) and final session (Session 5)

Measure	Session 1	Session 3	Session 5	Cohen’s d (Session 1 to 3)	Cohen’s d (Session 1 to 5)
PCL-5	48.9 (15.7)	41.0 (18.5)	39.8 (19.6)	0.46	0.51
PHQ-9	15.3 (6.34)	12.5 (6.14)	12.7 (5.9)	0.46	0.43

 PCL-5: PTSD Checklist, DSM-5 version; PHQ-9: patient health questionnaire, 9-item version; SDs: standard deviations. Estimated marginal means (EMMs) were used to adjust for missing data and within-subject correlations in the repeated measures design, as recommended by a reviewer. EMMs provide a model-based estimate of the average effect at each session, accounting for the overall statistical model