Table 3.
Associations between trying to control weight, weight control behaviors and current usage of electronic cigarettes according to sex
| Factors | Boys OR (95% CI) | Girls OR (95% CI) | ||||
|---|---|---|---|---|---|---|
| Model 1 | Model 2 | Model 3 | Model 1 | Model 2 | Model 3 | |
| Trying to control weight | ||||||
| No | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Yes | 0.91 (0.72–1.15) | 0.87 (0.68–1.11) | 0.95 (0.73–1.23) | 1.25 (0.79–1.98) | 1.12 (0.70–1.79) | 1.25 (0.76–2.04) |
| Healthy weight control behavior | ||||||
| Exercising | ||||||
| No | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Yes | 0.98 (0.78–1.25) | 0.93 (0.73–1.19) | 1.05 (0.80–1.38) | 1.38 (0.88–2.16) | 1.33 (0.84–2.11) | 1.48 (0.92–2.39) |
| Unhealthy weight control behaviors | ||||||
| Eating less food, fewer calories | ||||||
| No | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Yes | 1.32 (0.98–1.77) | 1.20 (0.88–1.63) | 1.42 (1.02–1.98) | 2.66 (1.69–4.18) | 2.15 (1.35–3.42) | 2.49 (1.53–4.05) |
| Taking laxatives | ||||||
| No | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Yes | 4.01 (2.39–6.73) | 3.10 (1.74–5.53) | 3.05 (1.70–5.45) | 5.61 (2.82–11.18) | 3.38 (1.60–7.15) | 3.52 (1.66–7.48) |
| Taking diet pills | ||||||
| No | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Yes | 3.68 (2.23–6.07) | 2.25 (1.29–3.93) | 2.32 (1.33–4.06) | 4.69 (2.53–8.69) | 2.64 (1.36–5.14) | 2.80 (1.43–5.50) |
| Going without eating for 24 hours | ||||||
| or more | ||||||
| No | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Yes | 2.42 (1.48–3.94) | 1.95 (1.15–3.32) | 2.02 (1.18–3.44) | 5.96 (3.47–10.23) | 3.62 (2.01–6.50) | 3.84 (2.12–6.94) |
OR: odds ratio. CI: confidence interval. Model 1: adjusted for sociodemographic characteristics including age, sex, location and level of school; Model 2: adjusted as for Model 1 plus the health-related behavior of current smoking; Model 3: adjusted as for Model 2 plus perceived weight.