TABLE 1.
Characteristics of children with asthma and their families
| Full sample | Age < 5 | Ages 5–18 | |
|---|---|---|---|
| N | 8834 | 2921 | 5913 |
| Child characteristics | |||
| Mean age, y (sd) | 7.3 (4.5) | 2.5 (1.2) | 9.7 (3.6) |
| Male, No. (%) | 5290 (59.9) | 1825 (62.5) | 3465 (58.6) |
| Allergic rhinitis, No. (%) | 1177 (13.3) | 379 (13.0) | 798 (13.5) |
| Chronic conditions in addition to asthma/allergic rhinitis, Median (range) | 0 (0–3) | 0 (0–3) | 0 (0–3) |
| Family characteristics | |||
| Mean no. adults per child, (SD) | 1.9 (0.5) | 1.8 (0.4) | 1.9 (0.5) |
| Mean age of adult, y (SD) | 38.5 (6.2) | 35.3 (5.3) | 40.1 (6.0) |
| Mean no. additional children insured (SD) | 1.1 (1.0) | 0.9 (0.9) | 1.2 (0.9) |
| Live in northeast, No (%) | 1910 (21.6) | 594 (20.3) | 1316 (22.3) |
| Live in mid-west, No (%) | 1577 (17.9) | 444 (15.2) | 1133 (19.2) |
| Live in west, No. (%) | 1226 (13.9) | 384 (13.1) | 842 (14.2) |
| Live in south, No. (%) | 4121 (46.7) | 1499 (51.3) | 2622 (44.3) |
| At least 1 adult with asthma, No. (%) | 1436 (16.3) | 478 (16.4) | 958 (16.2) |
| Characteristics of child’s zip code | |||
| Under age 18, % (SD) | 25.9 (2.5) | 25.8 (2.6) | 25.9 (2.5) |
| Above age 65, % (SD) | 11.7 (3.5) | 11.6 (3.6) | 11.8 (3.4) |
| Urban residence, % (SD) | 80.4 (19.4) | 81.4 (19.4) | 79.9 (19.4) |
| White, % (SD) | 78.9 (13.1) | 77.7 (13.3) | 79.4 (12.9) |
| Black, % (SD) | 10.5 (10.6) | 11.5 (11.2) | 10.0 (10.3) |
| Hispanic, % (SD) | 11.2 (12.1) | 11.8 (12.5) | 10.9 (11.9) |
| Under age 65 with more than high school education, % (SD) | 25.7 (8.5) | 25.9 (8.7) | 25.5 (8.4) |
| Annual family income, $ Median (range) | 55469 (24547–135244) | 55273 (24547–135244) | 55565 (24693–120307) |
Notes: Characteristics of child’s zip code are obtained from Census data at the 3-digit zip code level.