Table E2.
Patient characteristics of the 175 study children with bronchiolitis defined by strict criteria at study entry
| Characteristic | No. of children (%) |
|---|---|
| Age at study entry (mo), median (range) | 3.7 (11.7) |
| Sex: male | 106 (61) |
| Parental history of asthma | 36 of 173 (21) |
| Prematurity | 23 of 172 (13) |
| Comorbid medical disorder | 11 (6) |
| History of atopic dermatitis | 30 (17) |
| Siblings | 133 (76) |
| Exposure to smoking during pregnancy or early childhood | 28 (16) |
| Breast-feeding | 155 of 174 (89) |
| Hospitalization ≥3 d | 64 (37) |
| ICU stay | 12 (7) |
| Systemic corticosteroid | 12 of 174 (7) |
| Virus positive | 157 (90) |
| RSV∗ | 111 (63) |
| RV† | 19 (11) |
| RV-A | 2 (1) |
| RV-B | 0 (0) |
| RV-C | 17 (10) |
| RV-B + RV-C | 0 (0) |
| RV + RSV‡ | 6 (3) |
| Non-RSV/-RV | 39 (22) |
| Human metanpneumovirus | 10 (6) |
| Parainfluenzavirus 1 | 4 (2) |
| Parainfluenzavirus 3 | 3 (2) |
| Adenovirus | 1 (1) |
| Coronavirus HKU1 | 1 (1) |
| Coronavirus NL63 | 1 (1) |
| Influenza virus A | 1 (1) |
| Negative for tested viruses | 18 (10) |
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.