From: Family structure, parent-child conversation time and substance use among Chinese adolescents
 |  | Intact | Maternal | Paternal | No-parent |  | Non-intact vs intact | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
 |  | OR | OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | P for trend | OR (95% CI) | P |
 | Model |  |  |  |  |  |  |  |  |  |  |
Smoking | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Current vs non-current | A | 1 | 1.44 (1.22-1.69) | < 0.001 | 2.09 (1.57-2.80) | < 0.001 | 2.09 (1.49-2.94) | < 0.001 | < 0.001 | 1.62 (1.42-1.85) | < 0.001 |
 | B | 1 | 1.27 (1.07-1.50) | 0.005 | 1.55 (1.15-2.08) | 0.004 | / | / | / | 1.20 (1.04-1.38) | 0.013 |
Alcohol drinking | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Weekly vs less than weekly | A | 1 | 1.37 (1.13-1.66) | 0.001 | 1.97 (1.42-2.72) | < 0.001 | 3.71 (2.70-5.10) | < 0.001 | < 0.001 | 1.72 (1.48-2.00) | < 0.001 |
 | B | 1 | 1.27 (1.05-1.54) | 0.015 | 1.69 (1.21-2.34) | 0.002 | / | / | / | 1.43 (1.22-1.67) | < 0.001 |
Drug use | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Ever vs never | A | 1 | 1.47 (1.22-1.76) | < 0.001 | 1.96 (1.41-2.73) | < 0.001 | 3.05 (2.18-4.26) | < 0.001 | < 0.001 | 1.72 (1.48-2.00) | < 0.001 |
 | B | 1 | 1.40 (1.17-1.69) | < 0.001 | 1.67 (1.20-2.33) | 0.002 | / | / | / | 1.47 (1.26-1.72) | < 0.001 |