Participant and home characteristics
| Characteristic | Part 1 | Part 2 | ||
| Non-smoker homes N=50 | Smoker homes N=94 | Non-smoker homes N=16 | Smoker homes N=25 | |
| Participant | ||||
| Female | 86% | 75% | 85% | 76% |
| Age, years* † | 33 | 38 | 26 | 27 |
| Race/ethnicity | ||||
| White | 38% | 37% | 46% | 38% |
| Hispanic | 28% | 12% | 46% | 19% |
| Black | 24% | 31% | 8% | 29% |
| Other | 10% | 20% | 0% | 14% |
| Target child | ||||
| Female | 44% | 44% | 29% | 0% |
| Age, years* | 4.0 | 4.3 | 2.9 | 3.4 |
| Race/ethnicity | ||||
| White | 24% | 19% | 29% | 14% |
| Hispanic | 26% | 25% | 43% | 57% |
| Black | 22% | 31% | 0% | 29% |
| Other | 28% | 25% | 29% | 0% |
| Number of residents living in home* † | 4 | 2 | 3 | 2 |
| Square footage of home* † | 767 | 591 | 764 | 666 |
| Household income* † | US$37220 | US$25500 | US$32000 | US$34000 |