Data for preterm babies at gestational age ⩽ 34 weeks with asymptomatic bloody stool compared with controls
| Study group (n = 64) | Control group (n = 64) | p Value | |
|---|---|---|---|
| Values are either median (range) or number (%) unless otherwise indicated. | |||
| Gestational age (weeks) | 32 (26–34) | 32 (26–34) | NS |
| Birth weight (g) | 1645 (885–2660) | 1727 (684–2715) | NS |
| % Male/female | 39.1̃/60.9 | 54.8̃/45.2 | NS |
| Apgar at 1 min | 9 (3–9) | 8 (3–9) | NS |
| Partum spontaneous labour | 31 (49.1) | 33 (51.7) | NS |
| Maternal chronic disease | 9 (14.3) | 7 (11.3) | NS |
| Maternal pregnancy disease | 22 (36.1) | 20 (32.3) | NS |
| Drugs used in pregnancy | 6 (9.6) | 2 (3.2) | NS |
| Maternal fever | 10 (16.4) | 6 (9.7) | NS |
| Antenatal steroid treatment | 49 (76.2) | 51 (80.4) | NS |
| Assisted ventilation | 15 (22.8) | 22 (35) | NS |
| Oxygen treatment | 26 (40.4) | 29 (45) | NS |
| Antibiotic treatment before event | 47 (73.4) | 53 (85.7) | NS |
| Breast milk nutrition | 28 (45.9) | 46 (74.2) | 0.0014 |