| Time point | Groups A and B, mean (SD) | Group C, mean (SD) | β (SD) | d a | 95 % CI | |
---|---|---|---|---|---|---|---|
 |  | LL | UL | ||||
Subjective happiness (4 items, 1–7 scale) | Baseline | 4.12 (.16) | 4.18 (.17) | – | – | – | – |
4 weeks | 4.22 (.16) | 4.21 (.17) | .07 (.06) | .08 | −.044 | .187 | |
12Â weeks | 4.26 (.16) | 4.17 (.17) | .15 (.06) | .16b | .024 | .271 | |
Health-related quality of life (12 items, 0–100 scale) |  |  |  |  |  |  |  |
 Mental component | Baseline | 38.68 (1.26) | 39.26 (1.32) | – | – | – | – |
4 weeks | 39.51 (1.26) | 39.69 (1.32) | .39 (.57) | .05 | −.719 | 1.505 | |
12 weeks | 39.86 (1.27) | 39.72 (1.34) | .71 (.60) | .08 | −.447 | 1.884 | |
 Physical component | Baseline | 50.62 (1.04) | 50.94 (1.07) | – | – | – | – |
4 weeks | 50.38 (1.04) | 50.80 (1.07) | −.10 (.48) | −.01 | -1.029 | .835 | |
12 weeks | 50.91 (1.05) | 51.27 (1.08) | −.05 (.50) | −.01 | -1.025 | .933 |