. Author manuscript; available in PMC: 2011 Dec 1.

Published in final edited form as: J Thorac Cardiovasc Surg. 2010 Jun 18;140(6):1245–1250. doi: 10.1016/j.jtcvs.2010.05.022

Table 2.

Associations between risk factors and preoperative death.

Mean ± SD or Percent	Unadjusted Associations			Multivariate Model^b
Mean ± SD or Percent	Yes (N=26)	No (N=880)	p-value^a	Odds Ratio (95% CI)	p-value
Prenatal Diagnosis	18 (69%)	659 (75%)	0.51
Major extracardiac congenital abnormality	12 (46%)	48 (6%)	<0.0001	10.0 (4.0, 24.7)	<0.0001
Chromosomal	1 (4%)	11 (1%)	0.29
All other	11 (44%)	37 (4%)	<0.0001
Gestational Age, Weeks	36 ± 3	38 ± 2	0.003	1.3 (1.1, 1.5)	0.02
Low Birth Weight (<2500 grams)	11 (42%)	136 (16%)	< 0.001
Aortic Atresia	16 (62%)	530 (60%)	0.90
Obstructed Pulmonary Venous Return	6 (23%)	44 (5%)	0.002	4.0 (1.3, 12.3)	0.02

Chi-square test of equal proportions.

Multiple logistic regression (N=905). Only risk factors displaying significant univariate association with mortality are included