Success rates may be misleading if they are based on a small number. We omit graphed data if there are less than 20 transfers in a segment. You can find these outcomes expressed as a fraction in the table following the graphed data. The bottom of the fraction indicates the number of transfers and the top shows the number of live births.

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Swipe table to view data.

Fresh Embryos

< 35

36-37

38-40

41-42

Donor

Live Birth Rate

6 / 8

3 / 7

0 / 2

1 / 2

0 / 3

Average Embryos Transferred

1.4

1.4

1.5

1.0

1.0

Number of Transfers

8

7

2

2

3

Thawed Embryos

< 35

36-37

38-40

41-42

Donor

Live Birth Rate

5 / 13

3 / 6

0 / 5

0 / 3

1 / 1

Average Embryos Transferred

1.5

1.7

1.6

1.3

1.0

Number of Transfers

13

6

5

3

1

Banked Embryos / Oocytes

< 35

36-37

38-40

41-42

Donor

Number of Cycles

12

10

9

12

N/A

Based on 2015 data as reported to the CDC. This data has not been verified. A message from the CDC, "A Comparison of clinic success rates may not be meaningful because patient medical characteristics and treatment approaches vary from clinic to clinic."