Characteristic | Study group (n = 31) | Control group (n = 35) | p value |
Male gender | 42 | 54 | 0.450 |
Gestational age (wk) | 28 (24–32) | 31 (24–32) | 0.003 |
Birth weight (g) | 1150 (670–2060) | 1360 (680–2680) | 0.118 |
Small for gestational age | 10 | 29 | 0.068 |
Singleton births | 58 | 80 | 0.065 |
Apgar score <7 at 5 min | 42 | 20 | 0.065 |
Umbilical artery catheter | 61 | 43 | 0.212 |
Duration of use (days) | 4 (0–18) | 0 (0–13) | 0.032 |
RDS | 61 | 17 | <0.001 |
Assisted ventilation | 90 | 46 | <0.001 |
Duration of use (days) | 10 (0–59) | 0 (0–65) | 0.001 |
Oxygen supplementation | 100 | 74 | 0.003 |
Duration of use (days) | 42 (4–115) | 4 (0–118) | <0.001 |
Treatment with inotropics | 55 | 43 | 0.468 |
Duration of use (days) | 0.5 (0–6.6) | 0 (0–4.6) | 0.240 |
Primary hospitalisation | |||
Duration of use (days) | 78 (27–143) | 41 (19–123) | 0.004 |
Categoric data are shown as % and continuous data as median (range).