Parameter

Median (min/maximum)

Birth weight [g]

613 (340 - 1100)

Gestational age [weeks]

25 (24 - 39)

Postnatal age at operation [days]

7 (1 - 14)

Primary diagnosis

8 SIP 3 Gastric perforation 2 NEC 2 Meconium ileus 2 Necrosis of forefood, skin

Postoperative ventilation [days]

6.5 (1 - 43)

Mortality

3 (12 h, 12 days postop.; 4 months)