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Table 2 Factors associated with overall tobacco use among adolescents for both survey years by univariate logistic regression analysis

From: Changes in prevalence, and factors associated with tobacco use among Bangladeshi school students: evidence from two nationally representative surveys

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  
  1. CI Confidence Interval. TK: Bangladeshi currency (1 USD ≈ 85 TK)