Cycle - The start of medications with the intent to proceed with IVF.

Fresh embryo transfer - During IVF, the placement of one or more fresh (not frozen) embryos into the uterus of a woman.

Frozen embryo transfer - Placing one or more cryopreserved (frozen) embryos during IVF into the uterus of a woman.

Live birth rate - The percentage of patients who delivered a baby as a result of IVF.

Current pregnancy rate - Current pregnancy rate(CPR) is the proportion of patients who are still pregnant 12 weeks following embryo transfer.

Pregnancy rate - The proportion of patients whose pregnancy tests were positive two weeks following embryo transfer is known as the pregnancy rate.

Preliminary outcomes - Results that are still preliminary since centers are still reporting them.