Bivariate and multivariate logistic models of intention to quit in the next six months
| Independent variables | Bivariate OR (95% CI) | Multivariate OR (95% CI) | |
| Sex | |||
| Female | 1 | 1 | |
| Male | 0.74 (0.54 to 1.01) | 0.62 (0.43 to 0.90)* | |
| Age | |||
| 18–24 | 1 | 1 | |
| 25–39 | 1.44 (0.74 to 2.82) | 1.55 (0.88 to 2.72) | |
| 40–54 | 0.85 (0.38 to 1.92) | 0.97 (0.47 to 1.98) | |
| 55+ | 1.07 (0.44 to 2.61) | 0.95 (0.36 to 2.48) | |
| Education | |||
| < Middle school | 1 | 1 | |
| Middle school | 1.36 (0.74 to 2.51) | 1.44 (0.74 to 2.80) | |
| High school | 1.41 (0.70 to 2.81) | 1.59 (0.70 to 3.56) | |
| > High school | 0.73 (0.30 to 1.76) | 0.82 (0.29 to 2.33) | |
| Income (pesos/month) | |||
| 0–3000 | 1 | 1 | |
| 3001–5000 | 1.03 (0.63 to 1.67) | 0.76 (0.45 to 1.30) | |
| 5001–8000 | 0.92 (0.42 to 2.01) | 0.89 (0.36 to 2.20) | |
| 8001 or more | 0.83 (0.65 to 1.06) | 0.85 (0.64 to 1.12) | |
| Smoking regularity | |||
| Daily | 1 | 1 | |
| Non-daily | 1.75 (1.02 to 3.02)* | 1.76 (0.94 to 3.29) | |
| Quit attempt in last year | |||
| No | 1 | 1 | |
| Yes | 1.19 (0.79 to 1.80) | 1.17 (0.74 to 1.85) | |
| Frequency of buying single cigarettes to reduce consumption, last month | |||
| None | 1 | 1 | |
| Once in a while | 0.95 (0.56 to 1.61) | 1.00 (0.57 to 1.77) | |
| Often/very often | 3.20 (1.74 to 5.86)§ | 3.71 (2.13 to 6.48)§ | |
| Cues to smoke after seeing single cigarettes for sale, last month | |||
| None | 1 | 1 | |
| Low | 1.27 (0.70 to 2.30) | 1.12 (0.60 to 2.08) | |
| Middle | 1.33 (0.78 to 2.29) | 1.11 (0.61 to 2.01) | |
| High | 0.55 (0.26 to 1.16) | 0.40 (0.19 to 0.85)* |
*p<0.05; †p<0.01; ‡p<0.001; §p<0.0001.