Demographic and clinical characteristics of the study population
| Vaginal delivery n=25 | Caesarean delivery n=55 | P-value | |
|---|---|---|---|
| Birth weight (grams)* | 620 (105) | 590 (195) | 0.23 |
| Gestational age (weeks)* | 23 (1) | 24 (1) | <0.001 |
| Female sex n (%) | 7 (28) | 24 (44) | 0.14 |
| Antenatal steroid use n (%) | 17 (71) | 47 (92) | 0.02 |
| Maternal chorioamnionitis n (%) | 14 (56) | 18 (33) | 0.06 |
| Maternal preeclampsia n (%) | 2 (8) | 18 (33) | 0.02 |
| Surfactant dose | 1.5 (1) | 2 (2) | 0.06 |
| BPD n (%) | 7 (29) | 21 (40) | 0.35 |
| Severe IVH n (%) | 4 (16) | 7 (13) | 0.72 |
| Severe ROP n (%) | 4 (16) | 17 (31) | 0.16 |
| NEC n (%) | 4 (16) | 6 (11) | 0.54 |
| Mortality n (%) | 8 (32) | 11 (20) | 0.27 |
*median (IQR)