| NEC | SIP | P value |
---|---|---|---|
Number of samples | 13 | 16 | – |
Gestation (weeks), median (IQR) | 25 (24–28) | 25 (24–27) | 0.888 |
Birth weight (g), median (IQR) | 731 (610–794) | 718 (688–790) | 0.257 |
Vaginal birth | 4 (31%) | 4 (25%) | 0.999 |
Male | 8 (62%) | 12 (75%) | 0.707 |
Diagnosis (DOL), median (IQR) | 20 (18–35) | 6 (5–8) | 0.066 |
Surgery (DOL), median (IQR) | 30 (22–42) | 7 (6–10) | 0.079 |
Section | Â | Â | 0.975 |
 Jejunum | 1 (8%) | 1 (6%) |  |
 Ileum | 11 (85%) | 14 (88%) |  |
 Colon | 1 (8%) | 1 (6%) |  |
Bacteraemia prior to surgery | 7 (54%) | 0 (0%) | 0.003 |
Any antibiotics prior to surgery | 13 (100%) | 15 (94%) | 0.999 |
Days antibiotics prior to surgery, median (IQR) | 8 (3–17) | 2 (1–3) | 0.257 |