West Valley Fertility Center's Success Rates
West Valley Fertility Center has an "open door" policy that does not select, restrict or discourage patients from ART procedures. We have found that for some patients it is helpful to proceed with an ART procedure even when their chances for success are extremely low. This allows them to find closure and empowers them to choose what could be a more successful option for them (egg donation or adoption). Prior to an ART procedure all patients know what their chances for success are and what other available treatment options are.
Clinical/ Ongoing Pregnancy Rates
At West Valley Fertility Center we track our clinical or ongoing pregnancy rates on a monthly basis. Every month at our Quality Control meeting we go over the previous months treatment cycles and assess their outcome. This information is then updated on our website’s Ongoing Pregnancy Rates Table for 2008. We define a clinical or ongoing pregnancy as evidence of pregnancy by clinical or ultrasound parameters (ultrasound visualization of a gestational sac). It does not include: ectopic pregnancies, miscarriages or chemical pregnancies.
Clinical or Ongoing Pregnancy Rates per Embryo Transfer - January - September 2008
| Type of Cycle | Age of Woman |
|||
| Fresh Embryos From Non Donor Eggs | <35 |
35-37 |
38-40 |
>40 |
| Number of cycles | 52 |
21 |
18 |
11 |
| Number of clinical or ongoing pregnancies | 32 |
10 |
8 |
2 |
| Percentage of clinical or ongoing pregnancies | 61.5% |
47.6% |
8/18 |
2/11 |
| Thawed Embryos From Non Donor Eggs | ||||
| Number of transfers | 18 |
8 |
4 |
1 |
| Number of transfers resulting in clinical or ongoing pregnancies | 6 |
2 |
1 |
0 |
| Percentage of clinical or ongoing pregnancies | 6/18 |
2/8 |
1/4 |
0 |
Below you will find a graphic representation of our center's cumulative live birth pregnancy rates from 1997 to the most recent published report in 2006. This is followed by more detailed success rate information presented in table form.
West Valley Fertility Center
Cumulative Pregnancy Rates 1997-2006
At West Valley Fertility Center the average number of embryos transferred has been steadily decreasing. For the 2006 reporting year the average number of embryos transferred to women < 35 years old was 2.5. WVFC follows the guidelines of the American Society of Reproductive Medicine regarding the number of embryos transferred during In Vitro Fertilization.
Please note: A comparison of clinic success rates may not be meaningful because patient medical characteristics, treatment approaches and entrance criteria for ART may vary from clinic to clinic.
Type of Cycle |
Age of Woman |
|||
Fresh Embryos From Non Donor Eggs |
< 35 |
35-37 |
38-40 |
41-42 |
Number of cycles |
572 |
206 |
143 |
54 |
Number of cycles resulting in pregnancies |
275 |
88 |
44 |
15 |
Number of cycles resulting in live births |
245 |
74 |
35 |
8 |
Number of retrievals resulting in live births |
245 |
74 |
35 |
8 |
Number of transfers resulting in live births |
245 |
74 |
35 |
8 |
Number of retrievals |
543 |
190 |
130 |
50 |
Number of transfers |
510 |
185 |
126 |
47 |
Number of cancellations |
29 |
13 |
11 |
4 |
Percentage of cycles resulting in pregnancies |
48.1% |
42.7% |
30.8% |
27.8% |
Percentage of cycles resulting in live births |
42.8% |
35.9% |
24.5% |
14.8% |
Percentage of retrievals resulting in live births |
45.1% |
38.9% |
26.9% |
16.0% |
Percentage of transfers resulting in live births |
48.0% |
40.0% |
27.8% |
17.0% |
Percentage of cancellations |
5.1% |
6.3% |
7.7% |
7.4% |
Number of embryos transferred |
1568 |
636 |
495 |
184 |
Average number of embryos transferred |
3.1* |
3.4 |
3.9 |
3.9 |
Number of pregnancies with twins |
94 |
24 |
9 |
0 |
Number of pregnancies with triplets or more |
29 |
8 |
3 |
1 |
Percentage of pregnancies with twins |
34.2% |
27.3% |
20.5% |
0.0% |
Percentage of pregnancies with triplets or more |
10.5% |
9.1% |
6.8% |
6.7% |
Thawed Embryos From Non Donor Eggs |
||||
Number of transfers |
114 |
30 |
15 |
2 |
Number of transfers resulting in live births |
43 |
7 |
3 |
1 |
Percentage of transfers resulting in live births |
37.7% |
23.3% |
3/15 |
1/2 |
Number of embryos transferred |
325 |
85 |
43 |
5 |
Average number of embryos transferred |
2.9 |
2.8 |
2.9 |
2.5 |
Donor Eggs |
Fresh Embryos |
Thawed Embryos |
||
Number of transfers |
108 |
41 |
||
Number of transfers resulting in live births |
59 |
10 |
||
Percentage of transfers resulting in live births |
54.6% |
24.4% |
||
Number of embryos transferred |
295 |
139 |
||
Average number of embryos transferred |
2.7 |
3.4 |
||
About Fertility Treatment Success Rates
The Society for Assisted Reproductive Technology (SART) is an organization of ART providers affiliated with the American Society for Reproductive Medicine (ASRM). Since 1989 SART has been collecting data and publishing annual reports of pregnancy success rates for fertility clinics in the United States and Canada. In 1992, the U.S. Congress passed the Fertility Clinic Success Rate and Certification Act. This law requires the Centers for Disease Control and Prevention (CDC) to publish pregnancy success rates for ART in fertility clinics in the United States. In 1995, the CDC in consultation with SART and ASRM started to report the ART success rates. West Valley Fertility Center is a member of SART and has been reporting its ART success rates to CDC through SART since our laboratory became operational in 1997.
The goal of these reports is to help you as a potential patient make informed decisions about ART by providing information about what your chances are of having a child with fertility treatment, and where you can go for treatment. Many people considering IVF and related procedures use the published ART success rates to find the "best" fertility center. However, comparisons between clinics must be made with caution since many factors contribute to the success of an ART procedure. Some factors are related to the training and experience of the fertility doctor, the laboratory professionals, and the quality of services they provide. Other factors are related to yourself as a patient, such as your age and the cause of your infertility. Some centers may be more willing than others to accept and offer ART to couples with low chances of success, or may see more than the average number of patients with difficult infertility problems. These centers may have lower pregnancy rates than centers that discourage such patients or encourage them to use donor eggs which results in higher success rates among older women.
Last updated:
September 2, 2009
Reviewed by Dr. Vladimir Troche and his medical staff