| Baseline | 10 weeks later | Statistic value (t) | P-value |
---|---|---|---|---|
Measures of youths | Â | |||
 Chinese Craving Beliefs Questionnaire | 13.6 ± 4.5 | 11.5 ± 2.7 | 4.510 |  < 0.001* |
 Adolescents’ Behavior-Problem Scale | 92.4 ± 23.3 | 94.1 ± 28.1 | -0.706 | 0.482 |
 Family APGAR-Adolescents | 6.5 ± 2.7 | 6.5 ± 3.0 | -0.077 | 0.939 |
Measures of youths’ caregivers |  | |||
 Family APGAR-Caregivers | 5.7 ± 2.9 | 5.6 ± 2.8 | 0.342 | 0.733 |
 Chinese health questionnaire | 2.6 ± 2.5 | 1.7 ± 2.3 | 3.463 | 0.001* |
 Parenting Stress Index-Parent domain | 140.0 ± 22.6 | 136.1 ± 24.2 | 1.751 | 0.083 |
 Parenting Stress Index-Child domain | 124.0 ± 22.4 | 119.1 ± 25.8 | 2.276 | 0.025* |