Table 1. Demographic characteristics before and after matching.
| Before matching | After matching | |||||
| NEC groupn=23 | No NEC groupn=164 | P value | NEC groupn=23 | No NEC groupn=23 | P value | |
| Term (weeks) | 38.1±1.9 | 38.7±1.6 | 0.113 | 38.2±2.0 | 38.1±2.4 | 0.947 |
| Moderate to late preterm, n (%) | 3 (13) | 26 (15.8) | 0.173 | 3 (13) | 5 (21.7) | 0.699 |
| Weight (kg) | 3.05±0.76 | 3.16±0.51 | 0.176 | 3.05±0.75 | 3±0.62 | 0.813 |
| Type of CHD, n (%) | 0.226 | 1 | ||||
| Duct-dependent pulmonary circulation | 7 (30.4) | 27 (16.5) | 7 (30.4) | 7 (30.4) | ||
| Duct-dependent systemic circulation | 10 (43.5) | 75 (45.7) | 10 (43.5) | 10 (43.5) | ||
| Parallel circulation | 6 (26.1) | 62 (37.8) | 6 (26.1) | 6 (26.1) | ||
| Prenatal diagnosis, n (%) | 16 (69.5) | 116 (70.7) | 0.209 | 16 (69.5) | 16 (69.5) | 1 |
CHD, congenital heart diseaseNECnecrotising enterocolitis