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The Ins and Outs of In Vitro Fertilization (IVF)

IVF Success Rates

A number of factors determine IVF success rates, including the woman's age and the number of embryos transferred. Also, fertility clinics' success rates will vary.
However, if you are looking for a general view of IVF success rates, here are the results from 2011 based on the yearly summaries from the clinics that are members of the Society for Assisted Reproductive Technology:
 

Fresh Embryos With Non-Donor Eggs

<35 years old

35-37

38-40

41-42

>42

Number of cycles

39,721

19,930

20,130

10,277

6,033

Percentage of cycles resulting in live births

40.1

31.9

21.6

12.2

4.2

Average number of embryos transferred

1.9

2.1

2.5

3.0

3.1


Thawed Embryos From Non-Donor Eggs

<35 years old

35-37

38-40

41-42

>42

Number of transfers

13,480

6,665

4,956

1,781

1,284

Percentage of transfers resulting in live births

39.3

35.7

30.3

24.5

16.5

Average number of embryos transferred

1.9

1.8

1.9

2.0

2.1


Embryos From Donor Eggs (All Ages)

Thawed Embryos

Fresh Embryos

Number of transfers

6,641

9,332

Percentage of transfers resulting in live births

35.7

54.9

Average number of embryos transferred

1.9

1.9

Last reviewed by: Arthur Schoenstadt, MD
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