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Table 3 Odds ratio and 95% confidence interval for cigarette smoking, snuff /pipe use by knowledge of tobacco products and advertisement of tobacco products for Ellisras rural children aged 11 to 18 years

From: Advertisement and knowledge of tobacco products among Ellisras rural children aged 11 to 18 years: Ellisras Longitudinal study

  Cigarette smoking Pipe and snuff
  Model 1 Model 2 Model 1 Model 2
  OR(95%CI) OR(95%CI) OR(95%CI) OR(95%CI)
Knowledge of tobacco products     
Smoking has no effect on one’s health 1.9(1.1-3.1) 1.9(1.1-3.2) - -
Smoking is bad for women who are pregnant 1.6(1.0-2.6) 0.7(0.4-1.1) 0.4(0.3-0.7) 0.4(0.3-0.7)
Smoking near you is harmful to your health () 0.5(0.3-0.9) 0.6(0.3-0.9) 0.5(0.3-0.9)
Chewing tobacco is much healthier than smoking cigarettes - - 4.5(2.7-7.4) 4.5(2.7-7.4)
There is no difference between chewing tobacco smoking cigarettes they are all bad - - - 0.5(0.3-0.9)
Snuff is good for women who are stressed. - - - 0.5(0.3-0.8)
It doesn’t help giving up smoking when you are old, since the damage has been done - - - 1.7(1.0-2.9)
Advertisement of tobacco products
1. When you watch TV, Video or movies, how often do you see actors smoking or chewing tobacco? A lot 1.7(1.1-2.7) 1.6(1.0-2.6) - -
2. Have you ever been given free cigarettes by anybody other than your parents, friends or relatives? Yes - 4.0(2.4-6.7) - 3.8(2.2-6.7)
3. Do you have something (t-shirt, pen, backpack) with a cigarette brand or any tobacco brand logo on it? Yes    - 2.5(1.1-5.7)
4. During the past 30 days how many advertisement for cigarette or other tobacco products have you seen on the billboards? A lot   3.4(2.1-5.6) - 2.5(1.4-4.5)
5. During the past 30 days how many advertisements or promotions for cigarettes or other tobacco products have you seen in a classroom? A lot   2.0(1.1-3.6) - 2.4(1.2-4.5)
6. During the past 30 days how many advertisements or promotions for cigarettes or other tobacco products have you seen at home? None 0.3(0.2-0.5) 0.4(0.2-0.6)   -
  1. Model 1 = crude, model 2 = adjusted for age and gender.