| Total |  | Surgical patients | |||
---|---|---|---|---|---|---|
 | NEC group | Control group | p | NEC group | Control group | p |
GA (weeks), median (IQR) | 31.0 (29.4–33.7) | 31.1(29.3–33.2) | 0.75 | 31.8 (29.4–33.1) | 33.3 (29.8–34.1) | 0.26 |
Age (days), median (IQR) | 15 (12–19) | 15 (12–18) | 0.81 | 11 (9–22) | 4 (3–7) |  < 0.01 |
BW (g), median (IQR) | 1710 (1405–1970) | 1720 (1360–1960) | 0.84 | 1950 (1320–2230) | 1920 (1670–2260) | 0.62 |
Female, n (%) | 40 (49.4%) | 45 (55.6%) | 0.43 | 10 (52.6%) | 9 (47.4%) | 0.75 |