Demographic characteristics and smoking behaviour at wave 1 by country (n = 8930)
| Country | p Value | ||||
|---|---|---|---|---|---|
| Canada | USA | UK | Australia | ||
| n = 2189 | n = 2102 | n = 2367 | n = 2272 | ||
| Age in 2002 (%) | |||||
| 18–24 | 14.3 | 15.1 | 14.2 | 16.9 | <0.01 |
| 25–39 | 33.7 | 31.3 | 33.0 | 35.7 | |
| 40–54 | 34.9 | 35.9 | 28.8 | 32.3 | |
| 55+ | 17.2 | 17.6 | 24.1 | 15.1 | |
| Race (%) | |||||
| White/English only | 88.4 | 74.8 | 94.6 | 86.6 | <0.01 |
| All other | 11.6 | 25.2 | 5.4 | 13.4 | |
| Sex (%) | |||||
| Male | 45.8 | 46.4 | 49.8 | 44.7 | 0.07 |
| Female | 54.2 | 53.6 | 50.2 | 55.3 | |
| Income level (%) | |||||
| Low | 27.5 | 36.5 | 28.0 | 25.8 | <0.01 |
| Moderate | 36.8 | 35.3 | 33.7 | 34.8 | |
| High | 27.6 | 21.9 | 28.4 | 33.4 | |
| Refused | 8.0 | 6.4 | 9.9 | 6.0 | |
| Education level (%) | |||||
| Low | 47.8 | 45.3 | 63.5 | 68.0 | <0.01 |
| Moderate | 39.4 | 43.5 | 24.7 | 20.2 | |
| High | 12.8 | 11.2 | 11.8 | 11.8 | |
| Smoking status (%) | |||||
| Daily | 92.2 | 92.0 | 93.6 | 91.2 | 0.24 |
| Weekly | 6.9 | 7.1 | 6.1 | 8.1 | |
| Monthly | 0.9 | 0.9 | 0.4 | 0.7 | |
| No. cigarettes per day (%) | |||||
| <10 | 30.5 | 30.4 | 29.9 | 27.8 | <0.01 |
| 11 to 20 | 42.4 | 44.6 | 53.3 | 39.9 | |
| 21 to 30 | 22.5 | 14.3 | 11.8 | 23.7 | |
| >30 | 4.6 | 10.6 | 5.0 | 8.6 | |
| Time to first cigarette (%) | |||||
| ⩽5 min | 16.3 | 17.1 | 17.4 | 19.4 | <0.01 |
| 6–30 min | 16.6 | 16.4 | 18.9 | 17.5 | |
| 31–60 min | 46.5 | 42.0 | 47.5 | 42.8 | |
| >60 min | 20.6 | 24.5 | 16.2 | 20.3 | |
| Intention to quit (%) (in the next month, 6 months, or beyond 6 months) | |||||
| Yes | 81.1 | 75.1 | 65.3 | 75.6 | <0.01 |
| Ever tried to quit (%) | |||||
| Yes | 82.8 | 79.1 | 77.7 | 82.1 | 0.02 |