TABLE E1.
Clinical characteristics of subjects with and without follow-up between 3 and 6 years of age
| Subjects without follow-up (n = 47) | Subjects with follow-up (n = 159) | P value | |
|---|---|---|---|
| Demographics | |||
| Age at study entry (d) | 122 ± 71 | 139 ± 105 | .976 |
| Male sex (%) | 63.8 (30) | 56.6 (90) | .378 |
| White race (%) | 51.1 (24) | 52.8 (84) | .831 |
| Hospitalization data | |||
| Length of stay in hospital (d) | 2.30 ± 2.53 | 2.47 ± 2.51 | .416 |
| Lowest SaO2 (%) | 92 ± 9 | 92 ± 7 | .239 |
| Family history | |||
| Maternal history of asthma (%) | 8.51 (4) | 21.4 (34) | .054 |
| Maternal history of eczema (%) | 8.51 (4) | 5.66 (9) | .499 |
| Maternal history of allergic rhinitis (%) | 25.5 (12) | 30.8 (49) | .486 |
| Clinical history and other potential exposures | |||
| Smoking in home during first year of life (%) | 76.6 (36) | 64.5 (100) | .122 |
| Dog in home (%) | 51.3 (20) | 43.5 (60) | .387 |
| Laboratory tests at baseline | |||
| Baseline IgE (IU/mL) | 13.7 ± 16.0 | 24.3 ± 46.4 | .452 |
| Baseline eosinophils (%) | 1.67 ± 2.00 | 1.81 ± 2.65 | .604 |
| Nasal CCL5 (ratio) | 4.60 ± 2.19 | 4.39 ± 1.72 | .445 |
SaO2, Lowest oxygen saturation measured during index hospitalization.