Multiple logistic regression analysis of current non-smoking status (n = 5250)
| Characteristic | Variable | Adjusted odds ratio | 95% Confidence interval |
|---|---|---|---|
| Site | Houston | 1.0 | Referent |
| Santa Clara | 1.2 | 1.0, 1.4 | |
| Time | Pretest | 1.0 | Referent |
| Post-test | 0.9 | 0.8, 1.1 | |
| Intervention term (site × time) | Pre-Santa Clara/pre-post | 1.0 | Referent |
| Houston | |||
| Post-Santa Clara | 1.2 | 0.9, 1.5 | |
| Age (years) | 18–24 | 2.4 | 1.9, 3.1 |
| 25–44 | 1.0 | Referent | |
| 45–64 | 1.8 | 1.5, 2.1 | |
| ≥65 | 3.4 | 2.4, 4.7 | |
| Education | < College graduate | 1.0 | Referent |
| ≤College graduate | 1.5 | 1.3, 1.8 | |
| English language proficiency | None/fair/poor | 1.0 | Referent |
| Good | 1.3 | 1.1, 1.5 | |
| Fluent | 2.0 | 1.5, 2.6 | |
| Immigration | Before 1977 | 1.8 | 1.5, 2.2 |
| 1978–84 | 1.2 | 1.0, 1.4 | |
| After 1984 | 1.0 | Referent | |
| Employment | Employment/student/ | 1.0 | Referent |
| disabled/retired | |||
| Unemployment | 0.9 | 0.7, 1.1 | |
| Income | Below poverty level | 1.0 | Referent |
| Above poverty level | 1.0 | 0.8, 1.2 |