Table 1.
Asthma odds ratio and 95% confidence limits of primary independent variables at the age of 12 months and other covariates. Cell entries are number, % of column total
| Asthma at the age of 7 |
||||
|---|---|---|---|---|
| Primary independent variables | Total N = 589 |
Yes N = 95 |
No N = 494 |
OR (95% CI) |
| Day care attendance (Yes) | 102 (17) | 24 (25) | 78 (16) | 1.8 (1.1–3.0) |
| URI (Yes) | 333 (60) | 68 (76) | 265 (57) | 2.4 (1.4–4.1) |
| LRI (Yes) | 186 (34) | 45 (51) | 141 (31) | 2.3 (1.5–3.7) |
| Other covariates | ||||
| Female | 266 (45) | 37 (39) | 229 (46) | 0.7 (0.5–1.2) |
| Race (African American) | 131 (22) | 35 (37) | 96 (19) | 2.4 (1.5–3.9) |
| Parental asthma (Yes) | 240 (41) | 54 (57) | 186 (38) | 2.2 (1.4–3.4) |
| Breastfeeding ≥ 4 mos | 312 (53) | 37 (39) | 275 (56) | 0.5 (0.3–0.8) |
| Mother education ≤ high school | 147 (25) | 41 (43) | 106 (21) | 2.7 (1.7–4.3) |
| At least one sibling | 381 (66) | 57 (61) | 324 (67) | 0.8 (0.5–1.2) |
| Dog in home | 208 (35) | 25 (26) | 183 (37) | 0.6 (0.4–1.0) |
| Cat in home | 132 (22) | 14 (15) | 118 (24) | 0.5 (0.3–1.0) |
| ECAT>75th %tile | 166 (28) | 33 (35) | 133 (27) | 1.4 (0.9–2.3) |
| Endotoxin>75th %tile | 134 (23) | 26 (27) | 108 (22) | 1.4 (0.8–2.3) |
| ETS | 112 (21) | 24 (25) | 88 (18) | 1.6 (0.9–2.7) |