Table 2.
Comparison of neonatal characteristics among different gestational ages groups in patients completing 24 months follow-up*.
|
Group 1
≤28 wks N = 164 |
Group 2
28 wks + 1 day to 31 wks + 6 days N = 249 |
Group 3
>32 wks N = 89 |
Missing cases | p | |
|---|---|---|---|---|---|
| Birth weight, median (IQR), g | 825.5 (705–950) | 1,175 (980–1,345) | 1,405 (1,303–1,480) | – | <0.001 |
| Gestational age, median (IQR), wk | 26.5 (25.4–27.4) | 29.7 (29–30.6) | 33.3 (32.3–33.9) | – | <0.001 |
| Outborn, n (%) | 7 (4.3) | 10 (4) | 2 (2.3) | – | 0.698 |
| Ethnicity (Not-Hispanic), n (%) | 7 (4.3) | 9 (3.6) | 2 (2.2) | – | 0.720 |
| Multiple gestation, n (%) | 56 (34.2) | 85 (34.1) | 31 (34.8) | 0.992 | |
| Apgar 5th min, median (IQR) | 8 (7–9) | 9 (8–9) | 9 (9–10) | – | <0.001 |
| Male gender, n (%) | 89 (35.5) | 120 (47.8) | 42 (16.7) | – | 0.406 |
| Prenatal steroids exposure, n (%) | 152 (93.8) | 226 (91.5) | 80 (89.9) | 4 | 0.508 |
| Chorioamnionitis, n (%) | 64 (39) | 32 (12.9) | 3 (3.4) | 1 | <0.001 |
| Sepsis, n (%) | 41 (25) | 12 (4.8) | 1 (1.1) | – | <0.001 |
| Mechanical ventilation, n (%) | 127 (77.4) | 60 (24.1) | 3 (3.4) | – | <0.001 |
| Periventricular-intraventricular hemorrhage, n (%) | 45 (27.6) | 20 (8.1) | 8 (9) | 2 | <0.001 |
| Periventricular leukomalacia, n (%) | 4 (2.5) | 6 (2.4) | 2 (2.3) | 2 | 0.994 |
| PDA pharmacological treatment, n (%) | 87 (53.1) | 42 (16.9) | 1 (1) | – | <0.001 |
| PDA surgical treatment, n (%) | 28 (17.8) | 2 (0.8) | 0 | 15 | <0.001 |
| Necrotizing enterocolitis, n (%) | 13 (7.9) | 2 (0.8) | 0 | – | <0.001 |
| ROP surgical treatment, n (%) | 12 (7.3) | 2 (0.8) | 0 | – | <0.001 |
| Human milk feeding at discharge, n (%) | 87 (53.1) | 177 (71.1) | 78 (87.6) | – | <0.001 |
Wks, weeks.
*
Kruskal-Wallis test was used to compare groups.
The values in bold are statistically significant (p < 0.05).