| Unadjusted odds ratios with 95% CI | ||
---|---|---|---|
 | Total | Males | Females |
Age (years) | Â | Â | Â |
   <14 | 1.00 | 1.00 | 1.00 |
   14 | 0.88 [0.59, 1.31] | 0.82 [0.42, 1.60] | 0.91 [0.56, 0.49] |
   15 | 0.85 [0.58, 1.26] | 0.73 [0.37, 1.43] | 0.90 [0.56, 1.46] |
   ≥16 | 0.70 [0.39, 1.26] | 0.41 [0.16, 1.03] | 1.28 [0.59, 2.75] |
Gender | Â | Â | Â |
   Females | 1.00 | - | - |
   Males | 0.64 [0.46, 0.87] | - | - |
Close friends | Â | Â | Â |
   No | 1.00 | 1.00 | 1.00 |
   Yes | 0.58 [0.35, 0.95] | 0.43 [0.20, 0.96] | 0.72 [0.38, 1.34] |
Smoking | Â | Â | Â |
   No | 1.00 | 1.00 | 1.00 |
   Yes | 1.85 [1.08, 3.19] | 1.66 [0.77, 3.56] | 3.25 [1.41, 7.50] |
Alcohol use | Â | Â | Â |
   No | 1.00 | 1.00 | 1.00 |
   Yes | 1.70 [1.25, 2.30] | 2.09 [1.21, 3.61] | 1.93 [1.31, 2.83] |
Bullied | Â | Â | Â |
   No | 1.00 | 1.00 | 1.00 |
   Yes | 2.87 [2.06, 3.99] | 2.25 [1.26, 4.02] | 3.62 [2.42, 5.42] |
Depression | Â | Â | Â |
   No | 1.00 | 1.00 | 1.00 |
   Yes | 2.87 [2.06, 3.99] | 2.25 [1.26, 4.02] | 3.62 [2.42, 5.42] |
Understanding parents | Â | Â | Â |
   No | 1.00 | 1.00 | 1.00 |
   Yes | 0.45 [0.32, 0.62] | 0.50 [0.29, 0.88] | 0.41 [0.27, 0.62] |