Table 1.
Characteristics of the study population.
| Value | ||
|---|---|---|
| Gestational age | At birth (weeks) | 30.2 ± 2.5 |
| <30 weeks at birth | 284 (44.7) | |
| PMA at discharge (weeks) | 38.7 ± 2.7 | |
| Somatometry at birth | Weight (g) | 1,173 ± 239 |
| Length (cm) | 38.1 ± 3 | |
| Head circumference (cm) | 26.4 ± 2.1 | |
| BMI (g/cm2) | 7.97 ± 0.91 | |
| Somatometry at discharge | Weight (g) | 2,416.2 ± 307.5 |
| Length (cm) | 45.6 ± 2.1 | |
| Head circumference (cm) | 33.2 ± 1.5 | |
| BMI (g/cm2) | 11.56 ± 1.09 | |
| Perinatal data | Male gender | 306 (48.2) |
| Prenatal corticosteroids (complete) | 367 (57.8) | |
| Multiple gestation | 208 (32.8) | |
| Cesarean section | 463 (72.9) | |
| Apgar score 5 min <5 | 20 (3.1) | |
| Crib 1 score median (RIQ) | 1 (1, 2) | |
| Intubation resuscitation | 224 (35.4) | |
| Neonatal pathology | RDS | 307 (48.3) |
| MV | 345 (54.3) | |
| Pneumothorax | 20 (3.1) | |
| Early-onset sepsis | 24 (3.8) | |
| Late-onset sepsis | 201 (31.7) | |
| Anemia (transfusion) | 176 (33.6) | |
| NEC | 21 (3.3) | |
| PDA | 144 (22.7) | |
| Hypotension (inotropic support) | 45 (7.1) | |
| Acute kidney injury | 14 (2.2) | |
| Parenteral nutrition at 28 days of life | 54 (8.5) | |
| ROP ≥ 2 stage | 62 (9.8) | |
| BPD | 125 (19.7) | |
| PVL | 58 (9.1) | |
| HIV grade 3–4 | 27 (4.3) |
Values are expressed as number (%) or mean ± standard deviation.
BMI, body mass index; CRIB, Clinical Risk Index for Babies; RDS, respiratory distress syndrome; MV, mechanical ventilation; NEC, necrotizing enterocolitis; PDA, patent ductus arteriosus; ROP, retinopathy of prematurity; BPD, bronchopulmonary dysplasia; PMA, postmenstrual age; PVL, periventricular leukomalacia; HIV, intraventricular hemorrhage.