Table 1.

2011 National Pregnancy and Live Birth Data

Fresh Embryos From Nondonor Oocytes
Age (y)	< 35	35–37	38–40	41–42	> 42
Cycles resulting in pregnancy (%)	46.2	38.5	29.3	19.5	9.1
Cycles resulting in live birth (%)	40.1	31.9	21.6	12.2	4.2
Average number of embryos transferred	1.9	2.1	2.5	3.0	3.1
Live births with twins (%)	30.8	26.7	21.1	14.9	10.6
Live births with triplets or more (%)	1.2	1.3	1.3	0.7	0

Data from Society for Assisted Reproductive Technology.¹⁸