Table 4. Multiple linear regression analyses (robust variance estimates) to detect intervention effects regarding health, symptoms of depression and perceived control for both patients and partners.
| Outcome variables | Group a | Mean diff (SD) b | β (SE) c | 95% CI for β | p-value |
|---|---|---|---|---|---|
| PCS (n = 183) | Intervention group | -2.67 (0.93) | -1.08 (1.31) | -3.68 / 1.53 | 0.415 |
| Control group | -1.60 (0.96) | ||||
| MCS (n = 183) | Intervention group | 3.49 (1.10) | 0.94 (1.79) | -2.61 / 4.49 | 0.601 |
| Control group | 2.56 (1.20) | ||||
| PF (n = 189) | Intervention group | -4.28 (2.26) | -2.80 (2.83) | -8.41 / 2.81 | 0.325 |
| Control group | -1.48 (1.88) | ||||
| RP (n = 187) | Intervention group | -3.50 (4.57) | -1.82 (6.42) | -14.56 / 10.92 | 0.777 |
| Control group | -1.68 (4.12) | ||||
| BP (n = 190) | Intervention group | -3.33 (2.91) | -2.56 (4.67) | -11.83 / 6.72 | 0.586 |
| Control group | -0.77 (3.04) | ||||
| GH (n = 190) | Intervention group | -0.18 (2.07) | 2.40 (3.01) | -3.58 / 8.37 | 0.428 |
| Control group | -2.58 (1.85) | ||||
| VT (n = 189) | Intervention group | 5.23 (2.18) | 2.34 (3.25) | -4.11 / 8.78 | 0.473 |
| Control group | 2.89 (2.19) | ||||
| SF (n = 190) | Intervention group | 1.40 (2.36) | -3.17 (3.53) | -10.19 / 3.84 | 0.371 |
| Control group | 4.58 (2.48) | ||||
| RE (n = 186) | Intervention group | 7.66 (4.32) | 2.61 (6.25) | -9.80 / 15.02 | 0.677 |
| Control group | 5.05 (4.15) | ||||
| MH (n = 189) | Intervention group | 3.30 (1.89) | 0.43 (3.01) | -5.56 / 6.41 | 0.888 |
| Control group | 2.87 (1.89) | ||||
| BDI (n = 133) | Intervention group | 0.66 (0.68) | -0.06 (1.34) | -2.74 / 2.63 | 0.967 |
| Control group | 0.71 (0.98) | ||||
| CAS (n = 183) | Intervention group | 2.33 (0.52) | 0.65 (0.76) | -0.85 / 2.15 | 0.395 |
| Control group | 1.69 (0.48) |
a Control group as reference category.
b Mean difference between the baseline and 24-month follow-up assessment.
c Robust standard errors (robust variance estimates).
PCS = SF-36 physical component scale, MCS = SF-36 mental component scale, PF = physical functioning, RP = role limitations due to physical health problems, BP = bodily pain, GH = general health, VT = vitality, SF = social functioning, RE = role limitations due to emotional problems and MH = mental health, BDI = Beck Depression Inventory, CAS = Control Attitude Scale.