1998美國地區人工協助生殖之統計分析

1999 PREGNANCY SUCCESS RATES
Type of Cycle^a	Age of Woman
	<35	35-37	38-40	41-42^d
Fresh Embryos From Nondonor Eggs
Number of cycles	29,682	15,291	12,848	5,302
Percentage of cycles resulting in pregnancies	37.3	31.6	24.4	15.9
Percentage of cycles resulting in live births^c	32.2	26.2	18.5	9.7
Percentage of retrievals resulting in live births^c	35.6	30.4	22.4	12.3
Percentage of transfers resulting in live births^c	37.8	32.4	24.2	13.6
Percentage of cancellations	9.4	13.7	17.5	21.1
Average number of embryos transferred	3.0	3.3	3.5	3.7
Percentage of pregnancies with twins	32.6	28.6	22.7	14.0
Percentage of pregnancies with triplets or more	9.4	8.6	6.6	2.6
Percentage of live births having multiple infants^c	41.0	35.7	28.6	14.4
Frozen Embryos From Nondonor Eggs
Number of transfers	5,615	2,431	1,670	513
Percentage of transfers resulting in live births^c	19.7	19.1	15.8	16.2
Average number embryos transferred	3.0	3.0	3.1	3.3

Donor Eggs		All Ages Combined^e
	Fresh Embryos		Frozen Embryos
Number of transfers	5,844		2,287
Percentage of transfers resulting in live birth^c	41.6		23.5
Average number of embryos transferred	3.0		3.0

CURRENT CLINIC SERVICES AND PROFILE (AS OF 1/15/2000)
Total number of reporting clinics: 370
Services Offered:				Clinic Profile:
Donor egg?	84%	Gestational carriers?	61%	SART member?	95%
Donor embryo?	51%	Cryopreservation?	99%	Verified lab accreditation?
Single women?	83%			Yes	79%
				No	8%
				Pending	13%
^a Gestational carrier cycles are not included in these calculations. ^b Reflects patient and treatment characteristics of ART cycles performed in 1999 using fresh, nondonor eggs or embryos. ^c A multiple-infant birth is counted as one live birth. ^e All ages (including ages>42) are reported together because previous data show that patient age does not materially affect success with donor eggs.