Table 1.
Participant characteristics
| Histologic chorioamnionitis | ||
|---|---|---|
| Present (n = 47) | Absent (n = 165) | |
| Gestation at birth in weeks, mean (SD) | 29.8 (3.6) | 32.2 (3.2) |
| Birthweight in grams, mean (SD) | 1505 (728) | 1686 (588) |
| Birthweight z-score, mean (SD) | −0.1 (0.9) | − 0.7 (1.1) |
| Gestation at MRI in weeks, mean (SD) | 42.1 (1.5) | 42.0 (1.4) |
| Antenatal corticosteroids | 39 (83.0) | 122 (73.9) |
| Ruptured membranes > 24 h | 22 (46.8) | 13 (8.2) |
| Vaginal delivery | 29 (61.7) | 36(21.8) |
| Male | 24 (51.1) | 85 (51.5) |
| Singleton | 37(78.7) | 85 (51.5) |
| Postnatal corticosteroids | 2 (4.9) | 4 (2.7) |
| Bronchopulmonary dysplasiaa | 9 (19.2) | 15 (9.1) |
Data are n (%) unless otherwise specified, SD Standard deviation, PVL Periventricular leukomalacia, CI Confidence interval. aoxygen requirement at 36 weeks’ corrected age