Table 2.

Congenital heart defects in the study population

	NEC (N=21)	No NEC (N=6689)
Single-ventricle defects	8 (38%)	1623 (24%)
Hypoplastic left heart	5 (24%)	1106 (17%)
Tricuspid atresia	1 (5%)	194 (3%)
Hypoplastic right ventricle	0 (0%)	8 (<1%)
Other single ventricle	0 (0%)	115 (2%)
Non–single-ventricle defects	13 (62%)	5161 (80%)
Pulmonary stenosis	3 (14%)	451 (7%)
Coarctation of the aorta	2 (10%)	1071 (16%)
Tetralogy of Fallot	2 (10%)	602 (9%)
Interrupted aortic arch	2 (10%)	256 (4%)
Pulmonary atresia	1 (5%)	744 (11%)
Transposition of great arteries	1 (5%)	1270 (19%)
Truncus arteriosus	1 (5%)	79 (1%)
Aortic valve stenosis	0 (0%)	286 (4%)
Ebstein’s anomaly	0 (0%)	150 (2%)
Double outlet right ventricle	1 (5%)	257 (4%)

Abbreviation: NEC, necrotizing enterocolitis.