| Need for blood transfusion, n (%) | 15 (71.4) | 5 (50.0) | 0.244 |
| ≥7 days antibiotic therapy, n (%) | 16 (61.5) | 8 (80.0) | 0.357 |
| Radiologic findings | |||
| Intestinal pneumatosis, n (%) | 20 (76.9) | 8 (80.0) | 0.842 |
| Surgery | |||
| Need for surgery, n (%) | 12 (46.2) | 8 (72.7) | 0.138 |
| Need for surgery due to a secondary intestinal stenosis, n (%) | 1 (3.9) | 0 (0) | 0.510 |
| Pathology | |||
| Pathology findings confirming NEC, n (%) | 4 (36.4) | 1 (50.0) | 0.715 |