TABLE 1

Comparison of Baseline and Neonatal Characteristics of Infants Who Were Tested With the BSID-II Versus Infants Who Survived to Follow-up but Were Not Tested With the BSID-II

BSID-II (N = 541)No BSID-II (N = 161)χ2P
Proven sepsis, n (%)136 (25)37 (23).575
Suspected sepsis, n (%)169 (31)51 (32).906
NEC, n (%)13 (2)4 (3).953
Male gender, n (%)287 (53)91 (56).438
Gestational age, median (IQR), wk26.7 (25.9–27.3)26.7 (26.0–27.4).389
Birth weight, median (IQR), g870 (740–1000)910 (755–1070).393
Singleton birth, n (%)375 (69)123 (76).279
Prenatal steroid exposure, n (%)403 (80)120 (74).097
Cesarean delivery, n (%)440 (81)124 (77).194
Umbilical artery pH, median (IQR)7.31 (7.25–7.34)7.30 (7.23–7.34).300
1-min Apgar score, median (IQR)6 (4–7)6 (3–7).352
5-min Apgar score, median (IQR)8 (7–9)8 (6–8).388
10-min Apgar score, median (IQR)8 (7–9)8 (7–9).910
Persistent ductus arteriosus, n (%)234 (43)57 (35).173
Mechanical ventilation, n (%)388 (72)116 (72).987
Mechanical ventilation, median (IQR), d4 (1–9)4 (1–8).365
Duration of continuous positive airway pressure, median (IQR), d28 (12–41)26 (10–39).527
BPD, n (%)125 (23)19 (12).002
Intraventricular hemorrhage ≥3, n (%)38 (7)10 (6).720
Cystic leukomalacia, n (%)16 (3)6 (4).623
ROP grade ≥3, n (%)27 (5)6 (4).795