Table 1

Comparison of cases with NEC and controls

CharacteristicsNEC n=927Non-NEC n=2781OR (95% CI)p Value
Birth weight in kg, mean (SD)1.30 (0.72)1.34 (0.74)NA<0.01
Small for gestational age, n (%)53 (5.7)83 (3.0)1.98 (1.39 to 2.82)0.01
Male gender, n (%)505 (54.7)1549 (55.7)0.96 (0.82 to 1.11)0.56
Outborn, n (%)297 (32.1)658 (23.9)1.49 (1.28 to 1.75)<0.01
5-Min Apgar score <7, n (%)252 (27.7)602 (22.0)1.4 (1.17 to 1.68)<0.01
SNAP II score >20, n (%)254 (27.4)636 (22.9)1.33 (1.11 to 1.60)<0.01
Prenatal steroids use, n (%)661 (74.5)1813 (70.9)1.24 (1.00 to 1.53)0.05
Transfusion exposure in previous 2 days, n (%)144 (15.5)213 (7.7)2.38 (1.87 to 3.02)<0.01
  • NA, not applicable; NEC, necrotising enterocolitis; SNAP, Score for Neonatal Acute Physiology.