Gas stove use and personal characteristics among adult NHANES III participants with asthma
| Variable | Gas stove | No gas stove | p value for difference |
|---|---|---|---|
| Sample included all non-smoking adults aged 17 years or greater with asthma who had reliable spirometry results. Proportions are column proportions. | |||
| Sample characteristics | |||
| Sample size (unweighted) | 251 | 194 | – |
| Estimated population (weighted) | 2,235,392 | 2,515,535 | – |
| Personal characteristics | |||
| Age, mean (SE) | 42.3 (1.4) | 42.4 (1.7) | 0.96 |
| Sex (% female) | 71% | 61% | 0.10 |
| Race/ethnicity | 0.11 | ||
| White, non-Hispanic (%) | 76% | 85% | |
| African-American (%) | 17% | 12% | |
| Mexican-American (%) | 6% | 3% | |
| Socioeconomic/smoking variables | |||
| Previous cigarette smoking (%) | 36% | 34% | 0.77 |
| Education, mean years (SE) | 12.7 (0.4) | 13.0 (0.3) | 0.48 |
| Poverty-income ratio, mean (SE) | 3.0 (0.2) | 3.3 (0.2) | 0.37 |
| Housing/geographic factors | |||
| Age of home | 0.0006 | ||
| <1946 | 37% | 13% | |
| 1946–73 | 40% | 41% | |
| >1974 | 16% | 40% | |
| Unknown or not reported | 7% | 6% | |
| Rural location (%) | 38% | 59% | 0.003 |
| Geographic location | 0.09 | ||
| Northeast (%) | 28% | 18% | |
| South (%) | 22% | 21% | |
| Midwest (%) | 21% | 17% | |
| West (%) | 29% | 44% | |
| Lives with ⩾1 smokers (%) | 18% | 13% | 0.39 |
| Gas heating system (%) | 61% | 34% | 0.006 |