Table 1 Patient and family characteristics and genotype.
| Characteristic | Genotype GG (n = 139) | Genotype GC (n = 65) | Genotype CC (n = 3) |
|---|---|---|---|
| Gestation (week; median (IQR)) | 31 (28–32) | 30 (29–32) | 29 (25–31) |
| Birth weight (g; median (IQR)) | 1490 (1140–1720) | 1390 (1145–1705) | 1190 (830–1560) |
| Male | 82 (59%) | 65 (60%) | 1 (33%) |
| Twin pregnancy | 18 (22%) | 18 (16%) | 0 |
| Preterm rupture of membranes | 34 (25%) | 14 (22%) | 1 (33%) |
| Antenatal corticosteroids | 28 (20%) | 17 (26%) | 1 (33%) |
| 5‐min Apgar score <6 | 12 (9%) | 2 (3%) | 1 (33%) |
| Drugs used during resuscitation | 0 | 2 (3%) | 0 |
| All septicaemia | 43 (31%) | 25 (39%) | 2 (67%) |
| Chronic lung disease (O2 36 weeks) | 5 (4%) | 2 (3%) | 0 |
| Dexamethasone for CLD | 9 (7%) | 5 (8%) | 1 (33%) |
| Duration of hospitalisation (days; median (IQR)) | 45 (29–69) | 42 (31–64) | 51 (27–126) |
| Developmental/parental support (parental adviser/portage) | 95 (68%) | 38 (59%) | 2 (67%) |
| Maternal age (years) | 27 (23–30) | 26 (23–29) | 26 (25–27) |
| Mother educated beyond 16 years | 49 (35%) | 29 (44%) | 1 (33%) |
| Manual parental occupation or unemployed | 82 (59%) | 42 (64%) | 2 (67%) |
| Maternal car use | 78 (56%) | 39 (60%) | 1 (33%) |
CLD, chronic lung disease; IQR, interquartile range.