Table 2.
Correlates of purchasing singles, adult Mexican smokers
| Baseline independent variables | % bought singles at last purchase | Bought singles at last purchase* | Freq of buying singles** | Freq of buying singles to reduce consumption** | ||||
|---|---|---|---|---|---|---|---|---|
| Bivariate OR (95% CI) | Adj OR*** (95% CI) | Bivariate B (SE) | Adj B*** (SE) | Bivariate B (SE) | Adj B*** (SE) | |||
| Entire population | 16.5% | -- | -- | -- | -- | -- | -- | |
| Sex | Female | 16.5% | 1 | 1 | 0 | 0 | 0 | 0 |
| Male | 19.3% | 1.21[0.90 - 1.61] | 1.35[0.96 - 1.91] | 0.08[0.11] | 0.19[0.14] | -0.03[0.14] | 0.06[0.15] | |
| Age | 18-24 | 22.5% | 1 | 1 | 0 | 0 | 0 | 0 |
| 25-39 | 20.0% | 0.86[0.52 - 1.41] | 1.17[0.67 - 2.05] | -0.38[0.19]a | -0.24[0.22] | -0.40[0.19]a | -0.19[0.23] | |
| 40-55 | 12.9% | 0.51[0.30 - 0.88]a | 0.87[0.46 - 1.64] | -0.86[0.21]c | -0.59[0.24]a | -0.75[0.20]c | -0.39[0.24] | |
| 55+ | 17.9% | 0.75[0.40 - 1.39] | 1.08[0.50 - 2.35] | -1.02[0.25]c | -0.93[0.27]c | -1.02[0.25]c | -0.83[0.33]a | |
| Education | < Middle school | 21.1% | 1 | 1 | 0 | 0 | 0 | 0 |
| Middle school | 17.9% | 0.82[0.56 - 1.20] | 0.63[0.38 - 1.06] | 0.05[0.16] | -0.30[0.18] | 0.00[0.15] | -0.31[0.21] | |
| Technical school | 18.2% | 0.83[0.45 - 1.55] | 1.19[0.56 - 2.54] | -0.03[0.22] | -0.05[0.26] | 0.10[0.23] | 0.14[0.27] | |
| High school | 18.0% | 0.82[0.47 - 1.45] | 0.66[0.36 - 1.24] | 0.03[0.22] | -0.19[0.21] | 0.10[0.21] | -0.11[0.27] | |
| > High school | 14.6% | 0.64[0.34 - 1.21] | 0.7[0.30 - 1.64] | -0.37[0.23] | -0.43[0.25] | -0.20[0.25] | -0.23[0.34] | |
| Monthly household income (pesos) | $0-3000 | 25.6% | 1 | 1 | 0 | 0 | 0 | 0 |
| $ 3001-5000 | 20.2% | 0.73[0.46 - 1.18] | 0.89[0.53 - 1.49] | -0.42[0.18]a | -0.18[0.18] | -0.30[0.19] | -0.07[0.22] | |
| $5001-8000 | 12.6% | 0.42[0.27 - 0.65]c | 0.59[0.36 - 0.95]a | -0.89[0.20]c | -0.63[0.23]b | -0.66[0.22]b | -0.27[0.27] | |
| $8001 or more | 15.4% | 0.53[0.31 - 0.91]a | 0.67[0.41 - 1.10] | -0.57[0.22]a | -0.21[0.22] | -0.32[0.22] | 0.04[0.27] | |
| Missing | 12.9% | 0.43[0.24 - 0.77]b | 0.61[0.29 - 1.30] | -1.15[0.22]c | -0.89[0.23]c | -0.98[0.26]c | -0.62[0.29]a | |
| Smoking intensity | Non daily | 31.3% | 1 | 1 | 0 | 0 | 0 | 0 |
| Daily < = 5 cigs | 15.4% | 0.40[0.28 - 0.57]c | 0.41[0.28 - 0.59]c | -0.39[0.15]a | 0.04[0.17] | -0.59[0.17]c | -0.31[0.20] | |
| Daily >5 cigs | 7.4% | 0.18[0.09 - 0.33]c | 0.14[0.08 - 0.25]c | -0.80[0.16]c | -0.58[0.16]c | -0.89[0.19]c | -0.72[0.20]c | |
| Tried quit in last year | No | 15.2% | 1 | 1 | 0 | 0 | 0 | 0 |
| Yes | 23.9% | 1.74[1.18 - 2.58]b | 1.07[0.68 - 1.68] | 0.68[0.13]c | 0.39[0.15]b | 0.79[0.14]c | 0.48[0.16]b | |
| Intend to quit in next 6 months | No | 15.0% | 1 | 1 | 0 | 0 | 0 | 0 |
| Yes | 29.5% | 2.26[1.46 - 3.49]c | 2.17[1.45 - 3.27]c | 0.69[0.16]c | 0.57[0.17]b | 0.74[0.19]c | 0.59[0.20]b | |
| Urge to smoke when see singles sold | None | 8.2% | 1 | 1 | 0 | 0 | 0 | 0 |
| 3 or less/mo | 16.2% | 2.17[1.32 - 3.58]b | 1.84[1.03 - 3.29]a | 1.45[0.19]c | 1.36[0.20]c | 1.67[0.22]c | 1.59[0.25]c | |
| Weekly or more | 39.6% | 7.36[5.00 - 10.85]c | 8.06[5.27 - 12.30]c | 2.47[0.16]c | 2.41[0.16]c | 2.29[0.21]c | 2.19[0.22]c | |
| Observations | 1586 | 1583 | 1579 | |||||
a: p < 0.05; b: p < 0.01; c: p < 0.001.
*logistic regression models estimated to determine purchasing singles at last purchase; all variables in models assessed at baseline only.
**ordinal regression model estimated to determine frequency of purchasing singles; all variables in models assessed at baseline only.
***models adjust for all variables shown in the table