Results
Two months after the intervention, the mean change in the happiness score was significantly higher in the intervention group (2.32 ± 2.31) than that in the control group (-0.29 ± 1.81) (P < 0.001). Furthermore, the mean change in the score of water pipe dependence was significantly different between the intervention (-1.44 ± 1.4) and control (0.38 ± 0.85) groups (P < 0.001).