TABLE 2.
Exposure to Smoking in Cars in California in 2011 and Nonsmokers’ Intention to Smoke in the Next Year, Logistic Regression
| Factor | Model 1 | Model 2 | ||
|---|---|---|---|---|
| n = 23 394 | n = 21 716 | |||
| aOR | 95% CI | aOR | 95% CI | |
| SHS exposure in cars, d | ||||
| 0 | Ref | — | Ref | — |
| 1–2 | 2.27 | 1.86 to 2.76*** | 1.54 | 1.25 to 1.90*** |
| 3–7 | 3.03 | 2.31 to 3.99*** | 1.92 | 1.53 to 2.41*** |
| Sex | ||||
| Female | Ref | — | Ref | — |
| Male | 1.08 | 0.94 to 1.23 | 1.08 | 0.94 to 1.25 |
| Grade level | ||||
| Sixth | Ref | — | Ref | — |
| Seventh | 1.97 | 0.95 to 4.09 | 1.97 | 0.92 to 4.22 |
| Eighth | 3.29 | 1.57 to 6.90** | 3.45 | 1.62 to 7.35** |
| Ninth | 3.21 | 1.55 to 6.63** | 3.22 | 1.54 to 6.74** |
| 10th | 2.83 | 1.38 to 5.83** | 2.90 | 1.39 to 6.05** |
| 11th | 3.38 | 1.63 to 7.01** | 3.50 | 1.67 to 7.36** |
| 12th | 4.12 | 2.01 to 8.47*** | 4.20 | 2.02 to 8.76*** |
| Race and/or ethnicity | ||||
| White, non-Hispanic | Ref | — | Ref | — |
| African American, non-Hispanic | 0.74 | 0.56 to 0.98* | 0.60 | 0.46 to 0.79*** |
| Hispanic and/or Latino | 1.48 | 1.28 to 1.71*** | 1.54 | 1.33 to 1.79*** |
| Asian American, non-Hispanic | 0.86 | 0.67 to 1.11 | 0.86 | 0.65 to 1.13 |
| NH and/or PI, non-Hispanic | 1.12 | 0.67 to 1.85 | 1.04 | 0.61 to 1.78 |
| SHS in same room | — | — | 1.69 | 1.37 to 2.08*** |
| SHS in home | — | — | 0.77 | 0.54 to 1.08 |
| Live with smoker | — | — | 1.72 | 1.41 to 2.11*** |
All data presented are weighted to adjust for differential nonresponse and selection. All analyses in Models 1 and 2 were controlled for sex, grade level, and race and/or ethnicity. Model 2 further controlled for SHS in the same room, SHS in the home, and living with a smoker. aOR, adjusted odds ratio; NH, native Hawaiian; PI, Pacific Islander; —, not applicable.
*
P < .05 level; **P < .01; ***P < .001.