Adjusted odds ratios† from logistic regression of selected health beliefs on intention to quit (n=4673)
| Covariate | OR (95% CI) | |
| Sex | Male | 1.00 |
| Female | 1.07 (0.58 to 1.95) | |
| Age | 18–24 | 1.00 |
| 25–39 | 1.02(0.45 to 2.32) | |
| 40–54 | 1.28 (0.50 to 3.27) | |
| 55+ | 1.23 (0.51 to 2.97) | |
| Income | Low | 1.00 |
| Moderate | 1.09 (0.87 to 1.37) | |
| High | 1.36 (0.77 to 2.41) | |
| No answer | 0.91 (0.57 to 1.46) | |
| Education | Low | 1.00 |
| Moderate | 0.91 (0.67 to 1.24) | |
| High | 0.92 (0.66 to 1.28) | |
| Cigarettes smoked/day | 0–10 | 1.00 |
| 11–20 | 0.68 (0.57 to 0.81) | |
| 21–30 | 0.49 (0.35 to 0.68) | |
| 31+ | 0.48 (0.33 to 0.70) | |
| Knowledge of health effects scale (OR for 1 unit increase) | 1.03 (0.98 to 1.09) | |
| Smoke is dangerous to non-smokers | Disagree | 1.00 |
| Neither | 0.62 (0.29 to 1.32) | |
| Agree | 0.97 (0.59 to 1.60) | |
| Don't know | 0.52 (0.21, 1.28) | |
| Tobacco is addictive | Disagree | 1.00 |
| Neither | 1.02 (0.57 to 1.84) | |
| Agree | 1.05 (0.67 to 1.65) | |
| Don't know | 1.50 (0.54, 4.20) | |
| Every cigarette damages health** | Disagree | 1.00 |
| Neither | 0.98 (0.61 to 1.57) | |
| Agree | 1.65 (1.15 to 2.38) | |
| Don't know | 2.05 (1.07,3.93) | |
| Worried about future damage from smoking*** | Not at all | 1.00 |
| A little | 2.13 (1.63 to 2.78) | |
| Very much | 3.70 (2.35 to 5.83) | |
| Don't know | 1.90 (1.18, 3.08) | |
| Smoking has damaged health* | Not at all | 1.00 |
| A little | 1.18 (0.87 to 1.60) | |
| Very much | 1.48 (1.13 to 1.94) | |
| Don't know | 0.91 (0.56, 1.47) | |
| How much benefit if quit smoking*** | Not at all | 1.00 |
| A little | 2.00 (1.40 to 2.86) | |
| Very much | 3.85 (2.52 to 5.88) | |
| Don't know | 0.91 (0.57 to 1.45) | |