According to the Canadian Fertility and Andrology Society and the IVF Medical Directors of Canada, in 2013, the live birth rate per cycle started for women under 35 was 41% with in vitro fertilization (IVF).

These percentages decline as a woman gets older.

• For women aged 35-39, the live birth rate per cycle was 30%.
• For women 40 years old and over, the live birth rate per cycle was 15%.

The data was collected from 34 of 36 IVF centres in Canada where a combined total of 14,861 IVF/ICSI treatment cycles were undertaken in 2013.

The overall live birth rate was 23% per cycle started.

According to the U.S. Centers for Disease Control’s SART (Society for Assisted Reproductive Technology) 2014 statistics, a woman’s age not only affects the chance for pregnancy but also affects her risk for miscarriage. The percentages of ART cycles that resulted in miscarriage were below 14% among women 35 or younger. However, the miscarriage rates began to increase among women in their mid- to late-30s and continued to increase with age, reaching 29% at age 40 and over 60% among women older than age 44. Among women in the U.S. undergoing ART procedures using fresh, non-donor eggs or embryos, the risk for miscarriage appears to be similar to that experienced by other pregnant women in the US.