Table 2 Factors associated with overall tobacco use among adolescents for both survey years by univariate logistic regression analysis
| Covariates | Survey Year 2007 | Survey Year 2013 | ||
|---|---|---|---|---|
|
Odds Ratio (95% CI) | P-value |
Odds Ratio (95% CI) | P-value | |
| Sex | ||||
| Female | 1 | 1 | ||
| Male | 2.11 [1.09–4.07] | 0.028 | 3.45 [1.73–6.90] | 0.001 |
| Age | ||||
| Younger than 14 years | 1 | 1 | ||
| Equal to 14 years | 1.09 [0.69–1.73] | 0.689 | 1.61 [0.90–2.87] | 0.102 |
| Older than 14 years | 2.32 [1.30–4.14] | 0.006 | 3.26 [1.48–7.18] | 0.005 |
| Grade | ||||
| 7th | 1 | 1 | ||
| 8th | 1.43 [0.58–3.50] | 0.422 | 1.48 [0.75–2.90] | 0.246 |
| 9th or above | 1.82 [0.74–4.51] | 0.185 | 1.75 [0.55–5.57] | 0.334 |
| Average pocket money (per month) | ||||
| Less than or equal to 160 TK | 1 | |||
| More than 160 TK | 4.80 [2.63–8.78] | <.0001 | ||
| Spend less than or equal to 400 TK | 1 | |||
| Spend between 400 and 800 TK | 4.82 [0.89–26.10] | 0.067 | ||
| Spend more than or equal to 800 TK | 1.98 [0.28–13.71] | 0.477 | ||
| Aware of the effect of passive smoking | ||||
| Yes | 1 | 1 | ||
| No | 1.48 [0.72–3.05] | 0.273 | 0.641 [0.22–1.84] | 0.393 |
| Favoured banning smoking at public places | ||||
| Yes | 1 | 1 | ||
| No | 1.10 [0.52–2.31] | 0.793 | 1.92 [1.06–3.50] | 0.034 |
| Refused by the tobacco vendor for age | ||||
| Yes | 2.16 [1.04–4.51] | 0.040 | 0.25 [0.06–1.06] | 0.060 |
| No | 1 | |||
| Average cost per packet cigarette (20 cigarettes) | ||||
| Less than 64TK | 1 | |||
| More than or equal to 64 TK | 3.00 [0.94–9.54] | 0.061 | ||
| More than 200 Tk | 1 | |||
| Less than or equal to 75 TK | 2.54 [0.79–8.17] | 0.112 | ||
| Between 76 to 200 TK | 7.38 [3.22–16.92] | <.001 | ||
| Received anti-tobacco message | ||||
| Yes | 1.72 [0.61–4.88] | 0.295 | 1.05 [0.31–3.62] | 0.934 |
| No | 1 | 1 | ||
| Health warning on tobacco products | ||||
| Yes | 2.37 [1.14–4.91] | 0.022 | ||
| No | 1 | |||
| Noticed anyone smoking in the school | ||||
| Yes | 1 | |||
| No | 2.42 [1.45–3.95] | 0.001 | ||
| Being offered free tobacco products | ||||
| Yes | 2.68 [1.46–4.91] | 0.003 | 0.66 [0.14–3.12] | 0.588 |
| No | 1 | 1 | ||
| Taught about danger of tobacco in class | ||||
| Yes | 1 | 1 | ||
| No | 1.21 [0.78–1.90] | 0.380 | 1.07 [0.46–2.50] | 0.868 |
| Tobacco advertisement | ||||
| Yes | 1.56 [0.57–4.29] | 0.376 | 1.50 [0.81–2.80] | 0.191 |
| No | 1 | 1 | ||
| Exposed to tobacco smoke | ||||
| Yes | 4.06 [1.90–8.66] | 0.001 | 7.91 [2.74–22.90] | 0.001 |
| No | 1 | 1 | ||