| Pretest | Posttest | t-test (df = 169) | p-value | Cohen’s dz | |
---|---|---|---|---|---|---|
Mental health problems | Â | Â | Â | Â | Â | Â |
Mental health problems (total) | 11.08 ± 5.72 | 10.48 ± 6.55 | 1.88 | 0.062 | 0.14 |  |
Emotional symptoms | 3.01 ± 2.37 | 2.90 ± 2.64 | 0.78 | 0.436 | 0.06 |  |
Conduct problems | 2.14 ± 1.70 | 1.96 ± 1.74 | 1.65 | 0.100 | 0.13 |  |
Hyperactivity | 3.81 ± 2.35 | 3.47 ± 2.31 | 2.90 | 0.004 | 0.22 |  |
Peer problems | 2.14 ± 1.66 | 2.15 ± 1.83 | -0.11 | 0.916 | 0.01 |  |
Health-related quality of life | Â | Â | Â | Â | Â | Â |
Physical well-being | 17.29 ± 3.29 | 17.86 ± 3.40 | -2.92 | 0.004 | 0.22 |  |
Psychological well-being | 23.21 ± 5.26 | 23.69 ± 4.76 | -1.77 | 0.079 | 0.14 |  |
Moods and emotion | 27.53 ± 6.01 | 27.61 ± 6.20 | -0.24 | 0.814 | 0.02 |  |
Self-perception | 19.76 ± 4.51 | 19.82 ± 4.95 | -0.28 | 0.778 | 0.02 |  |
Autonomy | 18.61 ± 3.56 | 19.94 ± 3.43 | -5.83 | 0.000 | 0.48 |  |
Parent relation | 24.16 ± 4.11 | 24.15 ± 4.37 | 0.21 | 0.983 | 0.00 |  |
Financial resources | 12.72 ± 2.49 | 12.71 ± 2.57 | 0.04 | 0.972 | 0.00 |  |
Social support | 22.72 ± 4.54 | 22.73 ± 4.36 | -0.04 | 0.969 | 0.00 |  |
School environment | 22.79 ± 4.71 | 23.59 ± 4.76 | -2.69 | .008 | 0.21 |  |
Social acceptance | 13.05 ± 2.24 | 13.03 ± 2.48 | 0.14 | 0.891 | 0.01 |  |