Table 2.
Changes in symptoms and functioning from pre-treatment to three-month follow-up.
| M (SD) | F | P | d | µp2 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pre | Start | Post | 3-m f-u | A | B | C | ||||
| PSS-I | 31.40 (8.21) | – | 18.55 (10.06) | 15.90 (11.88) | 44.13 | <.001 | 1.52 | 0.61 | 0.63 | 0.60 |
| PCL-5 | 49.79 (11.23) | 50.69 (11.44) | 34.21 (14.84) | 30.00 (16.93) | 30.32 | <.001 | 1.38 | 0.52 | 0.53 | 0.54 |
| BDI-II | 29.66 (10.35) | 28.21 (12.17) | 19.66 (10.57) | 18.93 (13.83) | 13.69 | <.001 | 0.88 | 0.33 | 0.35 | 0.33 |
| BAI | 26.55 (12.33) | 26.07 (13.44) | 16.66 (12.33) | 17.07 (13.48) | 21.48 | <.001 | 0.73 | 0.43 | 0.42 | 0.44 |
| WSAS | 21.52 (8.26) | 21.72 (8.18) | 19.41 (7.60) | 18.66 (9.73) | 2.37 | .100 | 0.32 | 0.08 | 0.11 | 0.09 |
| WHO-5 | 33.24 (17.17) | 28.69 (18.36) | 39.45 (19.38) | 44.14 (20.77) | 5.91 | .003 | −0.57 | 0.17 | 0.29 | 0.18 |
| IIP-64 | 1.74 (0.50) | 1.74 (0.49) | 1.45 (0.47) | 1.39 (0.57) | 14.06 | <.001 | 0.65 | 0.33 | 0.38 | 0.33 |
Note: Effect sizes (µp2) are reported according to the imputation method used: A = imputation using last observation carried forward/backward; B = raw data (no imputation); C = expectation maximization method. F and p values are calculated using method A. PSS-I = PTSD Symptom Scale – Interview for DSM-IV, PCL-5 = PTSD Checklist for DSM-5, BDI-II = Beck Depression Inventory, BAI = Beck Anxiety Inventory, WSAS = Work and Social Adjustment Scale, WHO-5 = The World Health Organisation – Five Well-Being Index, IIP-64 = Inventory of Interpersonal Problems.