. Author manuscript; available in PMC: 2015 May 1.

Published in final edited form as: Prenat Diagn. 2014 Feb 4;34(5):445–449. doi: 10.1002/pd.4327

Table 2. Characteristics of fetuses who were products of in vitro fertilization, compared to those from conception without in vitro fertilization.

Parameter	IVF (N = 263)	Non-IVF (N = 2,498)	Unadjusted OR [95% CI]	P value
Mean maternal age (years)	35.4 ± 5.2	30.3 ± 6.3	N/A	<0.001
Multiple Gestation	180 (68.4%)	396 (15.9%)	11.5 (8.7 – 15.3)	<0.001
CHD	43 (16.3%)	576 (23.1%)	0.65 (0.46 – 0.92)	0.01

CHD = congenital heart disease, IVF = in vitro fertilization