Section 3: ART Cycles Using Frozen Nondonor Embryos

Figure 43 is a bar graph representing percentages of embryos transferred resulting in implantation among women using frozen nondonor embryos, by age group, 2008.

• Age <35, 24.3%
• Age 35–37, 20.5%
• Age 38–40, 17.2%
• Age 41–42, 12.9%
• Age 43–44, 9.7%
• Age >44, 9.5%

Figure 44 is a bar graph representing percentages of transfers that resulted in live births and singleton live births for ART cycles using frozen nondonor embryos and ART cycles using fresh nondonor embryos, 2008.

• Frozen embryos is subdivided into the following three categories:
  • Thawed embryos resulting in live births, 30.0%
  • Transfers resulting in live births, 30.6%
  • Transfers resulting in singleton live births, 23.6%
• Fresh embryos is subdivided into the following two categories:
  • Transfers resulting in live births, 36.7%
  • Transfers resulting in singleton live births, 25.1%

Figure 45 depicts two pie charts, A and B, representing risks of having multiple-fetus pregnancies and multiple-infant live births from ART cycles using frozen nondonor embryos, 2008.

• Pie chart A represents 9,164 pregnancies.
  • Singletons: 66.8%
  • Total multiple-fetus pregnancies 23.5%, which is subdivided as follows:
    • Twins: 20.8%
    • Triplets or more:  2.7%
  • Not able to determine number of fetuses: 9.6%
  • Note: Total does not equal 100% due to rounding.

• Pie chart B represents 7,123 live births.
  • Singletons: 77.1%
  • Total multiple-infant live births 22.9%, which is subdivided as follows:
    • Twins: 21.5%
    • Triplets or more: 1.4%