Table 1. Group characteristics at age 6 for 159 hospitalized RSV bronchiolitis patients [13], and non-hospitalized children [12].
| Hospitalized RSVbronchiolitis patients(n = 159) | Non-hospitalized (n = 549) | p-value | |
| Sex (male) | 87/159 (54.7) | 265/549 (48.3) | 0.153 |
| Median age at follow-up in yrs (IQR) | 5.88 (5.67–6.25) | 5.33 (5.17–7.75) | 0.923 |
| Median age at hospitalisation (months) | 2.0 (1.0–4.0) | – | – |
| Birth weight (g) | 3250 (3250–3750) | 3557 (3260–3860) | <0.001 |
| Gestational age (weeks) | 40.0 (39.0–40.6) | 40.0 (39.1–40.9) | 0.081 |
| Born September-March | 99/159 (62.3) | 270/549 (49.2) | 0.002 |
| Smoking during pregnancy | 27/155 (17.0) | 26/548 (4.7) | <0.001 |
| Smoke exposure up to age 6 | 42/159 (26.4) | 126/451 (27.9) | 0.721 |
| Breastfed in first 3 months | 97/155 (62.6) | 3768/515 (71.5) | 0.036 |
| Daycare in first 3 months | 52/155 (33.5) | 227/515 (44.1) | 0.020 |
| Pets in first year of life | 79/154 (51.3) | 274/475 (57.7) | 0.166 |
| Siblings | 134/155 (86.5) | 297/548 (54.2) | <0.001 |
| Maternal atopy | 66/154 (42.9) | 224/466 (48.1) | 0.262 |
| Maternal ethnicity Caucasian* | 149/154 (96.8) | 386/469 (82.3) | <0.001 |
| Maternal high educational level | 53/153 (34.6) | 301/470 (64.0) | <0.001 |
| Median height at age 6 (cm, IQR) | 117.2 (113.0–126.10 | 118.2 (114.3–121.8) | 0.094 |
| Median weight at age 6 (kg, IQR) | 21.0 (19.0–25.0) | 21.6 (19.7–24.0) | 0.567 |
Data are numbers (percentages) unless stated otherwise.
*
Caucasian = Not born in Africa, Latin America and Asia (Japan and Indonesia excluded) or Turkey.