Outcomes of ART cycles using fresh nondonor eggs or embryos, by stage and age group, 2006

In 2006, a total of 99,199 cycles using fresh nondonor eggs or embryos were started:
• 41,369 in women younger than 35
• 23,376 in women 35-37
• 19,775 in women 38-40
• 9346 in women 41-42
• 5333 in women older than 42
The above figure shows that a woman's chance of progressing from the beginning of ART to pregnancy and live birth (using her own eggs) decreases at every stage of ART as her age increases. As women get older, the likelihood of a successful response to ovarian stimulation and progression to egg retrieval decreases. As women get older, cycles that have progressed to egg retrieval are slightly less likely to reach transfer. The percentage of cycles that progress from transfer to pregnancy also decreases as women get older. As women get older, cycles that have progressed to pregnancy are less likely to result in a live birth because the risk for miscarriage is greater. Overall, 39 percent of cycles started in 2006 among women younger than 35 resulted in live births. This percentage decreased to 30 percent among women 35-37 years of age, 21 percent among women 38-40, 11 percent among women 41-42, and 4 percent among women older than 42. The proportion of cycles that resulted in singleton live births is even lower for each age group.