Statistics compiled by the Center for Disease Control and Prevention indicate pregnancy occurs in 29.4 percent of in-vitro fertilizations, with 22.4 percent resulting in live births, states WebMD. The success rate ultimately depends on the reason for infertility, where the procedure occurs and the age of the patient.
Women under the age of 35 have a significantly higher success rate relative to that of older women, reports CNN Health. In considering treatments using fresh embryos from non-donor eggs, about 40 percent of women under the age of 35 give birth through the treatment compared to just 31 percent of those from the ages of 35 to 37. Among 42-year-olds, the success rate dropped to just 3.9 percent.