Table 2.
Characteristics of extremely preterm infants with neurodevelopmental data at age 3 years by MWL category
| MWL category | |||
|---|---|---|---|
| > 15% MWL | 5–15% MWL | < 5% MWL | |
| n = 40 | n = 71 | n = 24 | |
| Gestational age, weeks | 25.9 (24.4–27.1) | 26.1 (24.9–26.9) | 26.0 (25.6–26.9) |
| Birth weight, g | 821 (607–918) | 818 (648–922) | 734 (633–872) |
| Small for gestational age | 1 (2.5) | 11 (15.5) | 8 (33.3) |
| Sex, male | 20 (50.0) | 42 (59.2) | 9 (37.5) |
| Antenatal corticosteroids | 38 (95.0) | 63 (88.7) | 21 (87.5) |
| CRIB II score | 11 (9–13) | 11 (9–12) | 11 (10–13) |
| Births after amino acid dosage protocol changes | 31 (77.5) | 55 (77.5) | 18 (75.0) |
| Age at the start of non-birth weight measurement, days | 4 (3–5) | 4 (3–5) | 5.5 (5–7) |
| Age at MWL, days | 5.5 (4–7) | 5 (4–7) | 6.5 (5–9) |
| Intraventricular hemorrhage | 9 (22.5) | 21 (29.6) | 6 (25.0) |
| Periventricular leukomalacia | 0 (0.0) | 1 (1.4) | 0 (0.0) |
| Bronchopulmonary dysplasia | 12 (30.0) | 18 (25.4) | 8 (33.3) |
| Patent ductus arteriosus requiring surgery | 1 (2.5) | 2 (2.8) | 2 (8.3) |
| Necrotizing enterocolitis | 1 (2.5) | 7 (9.9) | 0 (0.0) |
| Sepsis | 5 (12.5) | 7 (9.9) | 4 (16.7) |
| Retinopathy of prematurity requiring treatment | 21 (52.5) | 22 (31.0) | 9 (37.5) |
Abbreviations: CRIB, Clinical Risk Index for Babies; MWL, maximum weight loss
Note: Data are expressed as n (%) or median (interquartile range)