Table 1.
—Demographic and Social Characteristics
| Characteristic | Nonsmokers/No Household ETS Exposurea (n = 1,011) | Nonsmokers/Household ETS Exposure (n = 790) | Smokers (n = 408) | P Valueb |
| Age, mean ± SD | 24.4 ± 5.9 | 21.5 ± 5.0 | 23.7 ± 5.6 | < .001 |
| Race | < .001 | |||
| African-American | 579 (57) | 514 (65) | 162 (40) | |
| White | 293 (29) | 196 (25) | 234 (57) | |
| Hispanic | 120 (12) | 67 (8) | 6 (1) | |
| Other | 19 (2) | 13 (2) | 6 (1) | |
| Private insurance | 196 (19) | 62 (8) | 25 (6) | < .001 |
| Marijuana use | 13 (1) | 24 (3) | 41 (10) | < .001 |
| Cocaine use | 3 (0.3) | 4 (1) | 17 (4) | < .001 |
| BMI (mean ± SD) | 27.8 ± 7.9 | 27.7 ± 7.8 | 27.4 ± 7.7 | .806 |
Data reported as No. (%) unless otherwise stated. ETS = environmental tobacco smoke.
a
Data unavailable for one patient.
b
Kruskal-Wallis and Pearson χ2 tests used to assess the hypothesis that there is no difference between the three smoking categories.