Definitions:
Cycles: Patients started on medication
Retrievals: Patients having transvaginal ultrasound-guided egg retrievals.

Note: ICSI pregnancies are already included in all other categories

Success rates - in vitro fertilization

University Women's HealthCare Pregnancy Rates for IVF and Frozen Embryo Transfer - 2003-2008

IVF
Patients less than 35 years of age
Initiated cycles		469
Oocyte retrievals		449
Embryo transfers		433
Pregnancies		221*
Pregnancy rate		49% per retrieval

Patients 35 to 39 years of age
Initiated cycles		266
Oocyte retrievals		238
Embryo transfers		227
Pregnancies		84*
Pregnancy rate		35% per retrieval

Patients 40 years of age or older
Initiated cycles		89
Oocyte retrievals		73
Embryo transfers		67
Pregnancies		15*
Pregnancy rate		21% per retrieval

Patients using donor oocytes
Initiated cycles		50
Oocyte retrievals		47
Embryo transfers		46
Pregnancies		25*
Pregnancy rate		53% per retrieval

FROZEN EMBRYO TRANSFER
All patients, all ages
Initiated cycles		143
Embryo transfers		165
Pregnancies		65*
Pregnancy rate		39% per retrieval

DEFINITIONS Cycles: Patients started on medication Retrievals: Patients having transvaginal ultrasound guided egg retrievals * Ongoing or delivered pregnancies “ICSI” pregnancies are included in all categories