IVF, Pregnancy, Fertility, Baby Dreams…

Live birth rate is the percentage of all IVF cycles that lead to live birth, and is the pregnancy rate adjusted for miscarriage and stillbirth. These percentages are for successful pregnancies, regardless of the number of children born, as twins and larger multiple-order births are more common in IVF cycles.

In 2006, Canadian clinics reported a live birth rate of 27%. A summary of 2006 reports from US clinics for cycles that did not involve donor eggs gave success rates varied widely by the age of the prospective mother, with a peak at 42.6% for 27-year-olds. Rates for younger patients were slightly lower, with a success rate of 35.3% for those 21 and younger, the youngest group evaluated. Success rates for older patients were also lower and decrease with age, with 37-year-olds at 27.4% and no live births for those older than 48, the oldest group evaluated.

IVF attempts in multiple cycles result in increased cumulatve live birth rates. Depending on the demographic group, one study reported 45% to 53% for three attempts, and 51% to 71% for six attempts.

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