Table I.
Patient characteristics of the 349 study children at study entry
| Characteristic | No. of children (%) |
|---|---|
| Age at study entry (mo), median (range) | 7.5 (23.7) |
| Sex: male | 223 (64) |
| Parental history of asthma | 81 of 346 (23) |
| Prematurity | 46 of 343 (13) |
| Comorbid medical disorder | 40 (12) |
| History of wheezing | 128 (37) |
| History of atopic dermatitis | 103 (30) |
| Siblings | 243 (70) |
| Exposure to smoking during pregnancy or early childhood | 51 of 346 (15) |
| Breast-feeding | 321 of 348 (92) |
| Hospitalization ≥3 d | 108 (31) |
| ICU stay | 12 (3) |
| Systemic corticosteroid | 73 of 348 (21) |
| Virus positive | 302 (87) |
| RSV∗ | 145 (42) |
| RV† | 101 (29) |
| RV-A | 24 (7) |
| RV-B | 3 (1) |
| RV-C | 73 (21) |
| RV-B + RV-C | 1 (0) |
| RV + RSV‡ | 8 (2) |
| Non-RSV/-RV | 95 (27) |
| Human metapneumovirus | 17 (5) |
| Parainfluenzavirus 1 | 12 (3) |
| Parainfluenzavirus 3 | 7 (2) |
| Coronavirus | 5 (1) |
| Adenovirus | 2 (1) |
| Influenzavirus A | 3 (1) |
| H1N1-virus | 3 (1) |
| Enterovirus | 1 (0) |
| Parainfluenzavirus 2 | 1 (0) |
| Negative for tested viruses | 44 (13) |
ICU, Intensive care unit.
∗
Including coinfection with viruses other than RV.
†
Including coinfection with viruses other than RSV.
‡
Including coinfection with viruses other than RV or RSV.