Table 2. Means (M) and standard deviations (SD) of distress outcome variables at baseline (T1), post-treatment (T2) and six month follow-up (T3) and differences between groups at the end of treatment (T2) and at six month follow-up (T3).
| Outcome | T1 | T2 | T3 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IG (N = 303) | CG (N = 329) | IG (N = 303) | CG (N = 329) | IG (N = 303) | CG (N = 329) | |||||||||||||
| M | SD | M | SD | M | SD | M | SD | F | p | d | M | SD | M | SD | F | p | d | |
| PHQ-9 | 8.56 | 5.94 | 8.40 | 5.52 | 7.96 | 5.34 | 8.93 | 5.61 | 8.34 | .017 | 0.18 | 7.86 | 5.31 | 8.84 | 5.73 | 8.12 | .005 | 0.18 |
| GAD-7 | 6.75 | 5.12 | 6.29 | 4.97 | 6.69 | 4.62 | 7.25 | 4.93 | 6.40 | .026 | 0.12 | 6.35 | 4.46 | 7.51 | 4.80 | 16.77 | < .001 | 0.25 |
| PHQ-15 | 10.58 | 5.57 | 10.32 | 5.31 | 9.77 | 5.29 | 9.99 | 5.44 | 1.47 | .320 | 0.04 | 9.88 | 5.46 | 10.30 | 5.53 | 3.16 | .126 | 0.08 |
| PHQ-10 | 7.80 | 4.41 | 7.42 | 4.21 | 7.19 | 4.17 | 7.55 | 4.14 | 4.53 | .050 | 0.09 | 7.13 | 3.96 | 7.74 | 4.35 | 9.08 | .006 | 0.15 |
| SF-12 psych. | 39.83 | 11.78 | 39.39 | 11.46 | 42.91 | 11.15 | 40.61 | 11.74 | 6.66 | .023 | 0.20 | 43.64 | 11.68 | 41.26 | 11.62 | 6.63 | .026 | 0.20 |
| SF-12 phys. | 42.75 | 9.65 | 42.72 | 9.95 | 43.77 | 9.96 | 44.14 | 10.22 | 0.71 | .558 | 0.04 | 44.10 | 10.26 | 44.20 | 10.20 | 0.65 | .485 | 0.01 |
PHQ-9: depressive symptoms, GAD-7: anxiety, PHQ-15: somatoform symptoms, PHQ-10: psychosocial stressors, SF-12 psych.: mental health status, SF12 phys.: physical health status; T1 = Baseline; T2 = End of aftercare; T3 = follow up; IG = Intervention Group; CG = Control group; M = mean, SD = standard deviation; F = F-statistics of the ANCOVA with scale-score at baseline and medical group as covariates; d = Between-group effect size Cohen’s d.