Bivariate and multivariate adjusted ordinal regression models for frequency of purchasing single cigarettes in last month
| Independent variables | Bivariate OR (95% CI) | Multivariate OR (95% CI) | |
| Sex | |||
| Female | – | – | |
| Male | 0.107 (0.160) | 0.209 (0.210) | |
| Age | |||
| 18–24 | – | – | |
| 25–39 | −0.947 (0.201)§ | −0.543 (0.309) | |
| 40–54 | −1.270 (0.229)§ | −0.891 (0.337)* | |
| 55+ | −1.925 (0.311)§ | −1.393 (0.368)‡ | |
| Education | |||
| < Middle school | – | – | |
| Middle school | 0.230 (0.237) | 0.207 (0.206) | |
| High school | −0.371 (0.234) | −0.058 (0.238) | |
| > High school | −0.129 (0.316) | −0.204 (0.300) | |
| Income (pesos/month) | |||
| 0–3000 | – | – | |
| 3001–5000 | −0.110 (0.209) | −0.366 (0.242) | |
| 5001–8000 | −0.580 (0.209)† | −0.416 (0.265) | |
| 8001 or more | −0.267 (0.097)* | −0.198 (0.107) | |
| Regularity of smoking | |||
| Daily | – | – | |
| Non-daily | 0.325 (0.230) | 0.070 (0.236) | |
| Quit attempt in last year | |||
| No | – | – | |
| Yes | 0.801 (0.183)§ | 0.344 (0.231) | |
| Intention to quit in next 6 months | |||
| No | – | – | |
| Yes | 0.525 (0.210)* | 0.199 (0.285) | |
| Frequency of buying single cigarettes to reduce consumption, last month | |||
| Never | – | – | |
| Once in a while | 3.633 (0.267)§ | 3.077 (0.300)§ | |
| Often/very often | 6.173 (0.553)§ | 5.854 (0.583)§ | |
| Cues to smoke after seeing single cigarettes for sale, last month | |||
| None | – | – | |
| Low | 1.401 (0.272)§ | 0.815 (0.312)* | |
| Middle | 1.745 (0.233)§ | 1.428 (0.259)§ | |
| High | 1.918 (0.309)§ | 1.355 (0.293)§ |
*p<0.05; †p<0.01; ‡p<0.001; §p<0.0001.