Table 1 Baseline characteristics of all extremely preterm infants born in GNN centres
Year of discharge | 2011–2013 n = 3.920 | 2014–2018 n = 8.903 | p |
|---|---|---|---|
Gestational age [weeks, mean ± SD] | 26.5 ± 1.6 | 26.5 ± 1.7 | 0.62* |
Birth weight [grams, mean ± SD] | 850 ± 253 | 852 ± 256 | 0.61* |
Male gender (%, 95 CI) | 53.8 (52.2–55.4) | 53.5 (52.5–54.5) | 0.58 |
Multiple birth (%, 95 CI) | 29.1 (27.7–30.5) | 31.9 (30.9–32.9) | 0.002 |
Small for gestational age(%, 95 CI) | 14 (13.0–15.1) | 13.5 (12.8–14.2) | 0.8 |