TABLE 2.
UNADJUSTED ASSOCIATIONS BETWEEN HOUSEHOLD SOURCE OF NO2 (GAS STOVES) AND MEASURED NO2 ⩾ 20 ppb, PERSONAL FACTORS, MAINTENANCE MEDICATION USE, AND SEASON OF NO2 SAMPLING STRATIFIED BY HOUSING TYPE (SOUTHERN NEW ENGLAND, 1998–2000)
| Multifamily Housing
|
Single-Family Housing
|
|||||
|---|---|---|---|---|---|---|
| Factors | n (%) | Gas stove (%) | NO2 ⩾ 20 ppb (%) | n (%) | Gas stove (%) | NO2 ⩾ 20 ppb (%) |
| Housing group | 242 | 54.6 | 45.9 | 486 | 23.5 | 9.3 |
| Personal factors | ||||||
| Sex | ||||||
| Male | 151 (62.4) | 57.0 | 44.4 | 307 (63.2) | 24.4 | 8.8 |
| Female | 91 (37.6) | 50.6 | 48.4 | 178 (36.8) | 21.8 | 10.1 |
| Age, yr | ||||||
| < 6 | 161 (66.5) | 53.4 | 46.6 | 310 (63.8) | 24.2 | 9.0 |
| ⩾ 6 | 81 (33.5) | 56.8 | 44.4 | 176 (36.2) | 22.2 | 9.7 |
| Ethnicity | ||||||
| White, Asian, other | 68 (28.1) | 45.6 | 35.3 | 422 (86.8) | 22.8 | 8.1 |
| Black | 44 (18.2) | 47.7 | 40.9 | 30 (6.2) | 26.7 | 13.3 |
| Hispanic | 130 (53.7) | 61.5 | 53.1 | 34 (7.0) | 29.4 | 20.6 |
| Housing characteristics | ||||||
| No. rooms in home | ||||||
| < 6 | 203 (83.9) | 55.2 | 47.8 | 85 (17.6) | 28.2 | 14.1 |
| ⩾ 6 | 39 (16.1) | 51.3 | 35.9 | 399 (82.4) | 22.6 | 8.3 |
| Mold/mildew | ||||||
| Yes | 95 (39.4) | 55.8 | 47.4 | 215 (44.3) | 19.1 | 7.4 |
| No | 146 (60.6) | 54.1 | 45.2 | 270 (55.7) | 26.7 | 10.7 |
| Water leaks | ||||||
| Yes | 72 (29.8) | 43.1 | 41.7 | 167 (34.4) | 24.6 | 12.0 |
| No | 170 (70.2) | 59.4 | 47.6 | 318 (65.6) | 22.6 | 7.9 |
| Maintenance medication use | ||||||
| Yes | 94 (38.8) | 53.2 | 41.5 | 276 (56.8) | 25.7 | 7.6 |
| No | 148 (61.2) | 55.4 | 48.6 | 210 (43.2) | 20.5 | 11.4 |
| Season of NO2 sampling | ||||||
| Nov–Mar | 97 (40.1) | 54.6 | 47.4 | 177 (36.4) | 22.6 | 9.6 |
| Apr–Oct | 145 (59.9) | 54.5 | 44.8 | 309 (63.6) | 24.0 | 9.1 |
Significant (p < 0.05, χ2 tests) differences between factor categories for gas stove use and NO2 ⩾ 20 ppb are shown in boldface type.