Table 5.
Influence of selected social-environmental factors on smoking status of male adults.
| Characteristic | Number of non-smokers | Number of current smokers | Unadjusted odds ratio (OR) [95% confidence interval (CI)] | P value | Adjusted ORa (95% CI) | P value |
|---|---|---|---|---|---|---|
| Parents smoking | ||||||
| No | 1,224 | 1,841 | 1 | 1 | ||
| Yes | 2,707 | 6,868 | 1.69 (1.55, 1.84) | <0.0001 | 1.43 (1.30, 1.57) | <0.0001 |
| Number of smokers living in household | ||||||
| 0 | 1,936 | 3,478 | 1 | 1 | ||
| 1 | 1,566 | 3,429 | 1.22 (1.12, 1.32) | <0.0001 | 1.13 (1.03, 1.24) | 0.01 |
| ≥2 | 545 | 1,971 | 2.01 (1.80, 2.25) | <0.0001 | 1.58 (1.40, 1.79) | <0.0001 |
| Percentage of smoking friends | ||||||
| ≤25 | 1,233 | 1,121 | 1 | 1 | ||
| 26–50 | 1,301 | 2,412 | 2.04 (1.84, 2.27) | <0.0001 | 2.00 (1.79, 2.24) | <0.0001 |
| 51–75 | 1,131 | 3,744 | 3.64 (3.28, 4.04) | <0.0001 | 3.57 (3.18, 3.99) | <0.0001 |
| ≥76 | 344 | 1,609 | 5.15 (4.47, 5.93) | <0.0001 | 5.11 (4.40, 5.94) | <0.0001 |
aAdjusted for age, marital status, education, annual family income, and body mass index, as well as for social-environmental factors using multiple logistic regression models.