Sample characteristics, cigarette consumption and smoking related thoughts by country (n = 9046)
| Variables | Country | Test of significance | |||
|---|---|---|---|---|---|
| Australia n = 2301 | UK n = 2400 | Canada n = 2206 | USA n = 2139 | ||
| Percentages for age and sex were based on unweighted data. | |||||
| Age (years) (%) | |||||
| 18–24 | 16.8 | 8.5 | 15.6 | 15.8 | χ2 (9) = 175.98, p<0.001 |
| 25–39 | 36.8 | 32.4 | 31.8 | 30.8 | |
| 40–54 | 32.9 | 33.9 | 34.5 | 33.8 | |
| 55+ | 13.5 | 25.3 | 18.0 | 19.6 | |
| Sex (% female) | 52.7 | 56.6 | 54.3 | 55.1 | χ2 (9) = 7.66, p = 0.054 |
| Daily cigarette consumption | |||||
| Mean | 18.7 | 16.9 | 16.6 | 18.6 | F(3, 9035) = 20.74, p<0.001 |
| SD | 13.6 | 11.0 | 9.7 | 11.8 | |
| Think about harm of smoking to others | |||||
| Mean | 2.9 | 2.7 | 3.1 | 3.0 | F(3, 9007) = 44.38, p<0.001 |
| SD | 1.4 | 1.4 | 1.3 | 1.4 | |
| Believe smoking causes lung cancer in non-smokers from secondhand smoke (% yes) | 76.9 | 82.6 | 82.2 | 72.1 | χ2 (3) = 91.22, p<0.001 |