Table 1.
Demographic data presented as median [interquartile range] or as n (%); obs, observations. *Defined as maternal betamethasone treatment before birth
| Characteristics | Model building dataset | Evaluation dataset |
|---|---|---|
| ELBW neonates | 148 (2814) | 69 (1212) |
| obs. per patient | 20 [14, 25] | 18 [13, 22] |
| Gestational age (weeks) | 27 [25, 28] | 27 [26, 28] |
| Birth weight (g) | 820 [710, 900] | 840 [735, 910] |
| Current weight (g) | 920 [795, 1105] | 924 [786, 1171] |
| obs. per patient | 5 [3, 6] | 5 [4, 6] |
| Ibuprofen treatment (yes) | 96 (64%) | 37 (54%) |
| Inotropes treatment (yes) | 76 (51%) | 23 (34%) |
| Mode of delivery | ||
| Vaginal | 51 (34%) | 19 (28%) |
| Cesarean | 97 (65%) | 50 (72%) |
| Sex | ||
| Female | 85 (57%) | 30 (44%) |
| Male | 63 (42%) | 39 (56%) |
| Lung maturation* | 128 (86%) | 56 (81%) |
| Neonatal death | 18 (12%) | 10 (14.5%) |
| Creaconc 1st day of life (mg/dl) | 0.57 [0.5, 0.68] | 0.71 [0.59, 0.83] |