Table 1.
Sample Characteristics
| Smokers (n = 7,093) | |
|---|---|
| Age at recruitment in years (%) | |
| 18–24 | 9.8 |
| 25–39 | 29.6 |
| 40–54 | 35.8 |
| 55+ | 24.8 |
| Sex: male (%) | 42.4 |
| Education levels (%) | |
| Low | 50.1 |
| Medium | 33.1 |
| High | 16.8 |
| Household income (%) | |
| Low | 27.9 |
| Medium | 33.9 |
| High | 32.1 |
| No information | 6.1 |
| Country (%) | |
| Canada | 25.6 |
| United States | 21.1 |
| United Kingdom | 25.4 |
| Australia | 27.9 |
| Stop-smoking medications (%) | |
| Reported using any for quit attempts | 40.6 |
| Cohort/year of recruitment (%) | |
| Wave 1 (2002) | 54.2 |
| Wave 2 (2003) | 9.2 |
| Wave 3 (2004) | 13.5 |
| Wave 4 (2005/2006) | 9.6 |
| Wave 5 (2006/2007) | 7.4 |
| Wave 6 (2007/2008) | 6.1 |