Clinical characteristics of infants (n=440) live-born before 30 weeks of gestation, delivered at Skåne University Hospital in Lund and admitted to a tertiary-level neonatal intensive care unit (NICU) in Lund between 2009 and 2015
| GA weeks; mean (SD) | 25.9 (1.8) |
| GA 22–24 weeks; n (% of total cohort) | 116 (26.4) |
| GA 25–27 weeks; n (% of total cohort) | 230 (52.3) |
| GA 28–29 weeks; n (% of total cohort) | 94 (21.4) |
| Birth weight, g; mean (SD) | 876 (274) |
| SGA; n (%) | 105 (23.9) |
| Mortality* | 52 (11.8) |
| Males; n (%) | 250 (56.8) |
| Twins; n (%) | 106 (24.1) |
| Triplets; n (%) | 18 (4.1) |
| Morbidities: | |
| NEC; n (%)† | 20 (4.8) |
| BPD; n (%)‡ | 211 (55.7) |
| Any IVH; n (%)§ | 119 (27.8) |
| IVH 3–4; n (%)§ | 42 (9.8) |
| Any ROP; n (%)¶ | 103 (23.4) |
*Before 36 weeks postmenstrual age.
†420 available for analysis.
‡379 available for analysis.
§428 available for analysis.
¶382 available for analysis.
.BPD, bronchopulmonary dysplasia; GA, gestational age; IVH, intraventricular haemorrhage; n, number; NEC, necrotising enterocolitis; ROP, retinopathy of prematurity; SGA, small for gestational age.