Success Rates

Pregnancy rates at Reproductive Endocrinology & Infertility of Greenville Hospital System Women's Hospital far exceed national averages. What sets us apart? Strong patient/doctor relationships, state-of-the-art laboratories, and commitment to advancing medical science through research have distinguished the REI program for more than a decade.

Reproductive Endocrinology & Infertility at Women's Hospital reports its success rates to the Society of Assisted Reproductive Technology (SART) of The American Society of Reproductive Medicine (ASRM). Federal legislation requires that this information be published, and all REI programs are required to do so.

Review the following ART Pregnancy Success Rates Charts and let the numbers speak for themselves.

GHS REI Pregnancy Success Rates Compared to National Average‡

‡ National averages were taken from Assisted Reproductive Technology in the United States Reports: 1999-2005.  

Although our REI statistics far exceed national averages, a comparison of clinic success rates may not be meaningful because patient medical characteristics and treatment approaches may vary from clinic to clinic. To keep success rates high, for example, some practices may limit the types of patients they see; others may have patients who choose to limit the number of eggs used in ART procedures. Variables include the following:

  • Diagnosis or reason for infertility
  • Age of the woman undergoing IVF
  • Quality of the IVF laboratory, and if frozen embryos are transferred, the cryopreservation procedures in place
  • ART techniques
  • Number of eggs retrieved, fertilized, and number of embryos transferred

Success rates are reported in several ways:

  • Pregnancy Rate Per Cycle. The number of pregnancies using the number of treatment cycles as the denominator. This figure does not take into consideration patients whose treatment cycles are canceled before a retrieval is carried out.
  • Pregnancy Rate Per Retrieval. This number is higher than Pregnancy Rate Per Cycle because cases of failed stimulation and failed fertilization are not included.
  • Pregnancy Rate Per Transfer. This number is higher than Pregnancy Rate Per Retrieval because only those couples are included who had adequate stimulation with some eggs fertilized.

It is also important to note the difference between a “clinical pregnancy” and a “chemical pregnancy.” The first is defined as having a heartbeat (determined by an ultrasound) at approximately seven weeks, whereas the second is a positive pregnancy test that does not materialize into a pregnancy. Further, a “take home baby rate” excludes clinical pregnancies that end in miscarriage or tubal ectopic pregnancies.

2003 ART Pregnancy Success Rates (Clinical Pregnancy Rates Based on Ultrasound)

Type of Cycle

<35

35-37

<38-40

341

Fresh Embryos from Non-Donor Eggs

No. of Cycles

54

15

13

5

Clinical Pregs/100 cycles

46.30%
(25/54)

66.70%
(10/15)

38.50%
(5/13)

20.00%
(1/5)

Clinical Pregs/100 retrievals

59.50%
(25/42)

71.40%
(10/14)

41.70%
(5/12)

33.30%
(1/3)

Live births/100 cycles





Live births/100 retrievals





Live births/100 transfers





Cancellations/100 cycles

12

1

1

2

Average number of embryos transferred

2.5

2.8

3.4

3.7

Twin Pregnanacies

9

2

1

0

Triplet Pregnancies

3

1

0

0

Quadruplet Pregnancies

0

0

0

0

Multiple live births/100 live births






Frozen Embryos from Non-Donor Eggs

Number of transfers

19

7

1

2

Clinical pregs/100 transfers

42.10%
(8/19)

28.60%
(2/7)

0

0

Live births/100 transfers





Average number of embryos transferred

2.5

2.9

3

2.5


Donor Egg Cycles

Number of fresh Transfers

1

0

2

0

Clinical pregs/100 fresh transfers

100%
(1/1)


50.00%
(1/2)


Live births/100 fresh transfers





Average number of fresh embryos transferred

3


2


Number of frozen transfers

0

0

2

3

Clinical pregs/100 frozen transfers



0

0

Live births/100 frozen transfers





Average number of frozen embryos transferred



3.5

4.5

2002 ART Pregnancy Success Rates

Type of Cycle

<35

35-37

<38-40

341

Fresh Embryos from Non-Donor Eggs

No. of Cycles

109

33

31

11

Clinical Pregs/100 cycles

42.20%
(46/109)

48.50%
(16/33)

32.30%
(10/31)

18.20%
(2/11)

Clinical Pregs/100 retrievals

46.00%
(46/100)

57.10%
(16/28)

37.00%
(10/27)

25.00%
(2/8)

Live births/100 cycles





Live births/100 retrievals





Live births/100 transfers





Cancellations/100 cycles

8.30%
(9/109)

15.20%
(5/33)

12.90%
(4/31)

27.30%
(3/11)

Average number of embryos transferred

2.8
(266/94)

3.5
(94/27)

3.1
(80/26)

4.5
(36/8)

Twin Pregnanacies

13

3

1

1

Triplet Pregnancies

4

1

0

0

Quadruplet Pregnancies

0

0

0

0

Quintuplet Pregnancies

0

0

0

0

Multiple live births/100 live births






Frozen Embryos from Non-Donor Eggs

Number of transfers

29

8

3

1

Clinical pregs/100 transfers

34.50%
(10/29)

12.50%
(1/8)

33.30%
(1/3)

0

Live births/100 transfers





Average number of embryos transferred

3.1
(91/29)

3.4
(27/8)

3
(9/3)

5
(5/1)


Donor Egg Cycles

Number of fresh Transfers

4

2

3

4

Clinical pregs/100 fresh transfers

75%
(3/4)

0

33.30%
(1/3)

75.00%
(3/4)

Live births/100 fresh transfers





Average number of fresh embryos transferred

2.5
(10/4)

3
(6/2)

3
(9/3)

3.8(15/4)

Number of frozen transfers

0

0

1

1

Clinical pregs/100 frozen transfers



100%
(1/1)

0

Live births/100 frozen transfers

0

0

0

0

Average number of frozen embryos transferred

0

0

3
(3/1)

3
(3/1)


2001 ART Pregnancy Success Rates

Type of Cycle

<35

35-37

<38-40

341

Fresh Embryos from Non-Donor Eggs

No. of Cycles

121

42

28

5

Clinical Pregs/100 cycles

49.6%
(60/121)

35.7%
(15/42)

46.4%
(13/28)

20.0%
(1/5)

Clinical Pregs/100 retrievals

54.1%
(60/111)

37.5%
(15/40)

54.2%
(13/24)

25.0%
(1/4)

Live births/100 cycles

46.3%
(56/121)

26.2%
(11/42)

42.9%
(12/28)

20.0%
(1/5)

Live births/100 retrievals

50.5%
(56/111)

27.5%
(11/40)

50.0%
(12/24)

25.0%
(1/4)

Live births/100 transfers

51.9%
(56/108)

28.2%
(11/39)

50.0%
(12/24)

25.0%
(1/4)

Cancellations/100 cycles

8.3%
(10/121)

4.8%
(2/42)

14.3%
(4/28)

20.0%
(1/5)

Average number of embryos transferred

2.9
(316/108)

3.2
(123/39)

3.4
(81/24)

4
(16/4)

Twin Pregnanacies

26.7%
(16/60)

26.7%
(4/15)

7.7%
(1/13)

0

Triplet Pregnancies

8.3%
(5/60)

20.0%
(3/15)

0

0

Quadruplet Pregnancies

1.7%
(1/60)

0

0

0

Quintuplet Pregnancies

0

6.7%
(1/15)

0

0

Multiple live births/100 live births

28.60%
(16/56)

27.30%
(3/11)

8.30%
(1/12)

0


Frozen Embryos from Non-Donor Eggs

Number of transfers

13

16

2

1

Clinical pregs/100 transfers

38.5%
(5/13)

50.0%
(8/16)

50.0%
(1/2)

0

Live births/100 transfers

30.8%
(4/13)

43.8%
(7/16)

50.0%
(1/2)

0

Average number of embryos transferred

3.3
(43/13)

3.60%
(57/16)

2.5
(5/2)

4
(4/1)


Donor Egg Cycles

Number of fresh Transfers

3

2

2

4

Clinical pregs/100 fresh transfers

66.7%
(2/3)

0

50.00%
(1/2)

50.00%
(2/4)

Live births/100 fresh transfers

66.70%
(2/3)

0

50.00%
(1/2)

50.00%
(2/4)

Average number of fresh embryos transferred

2.3
(7/3)

3
(6/2)

3
(6/2)

3
(12/4)

Number of frozen transfers

0

1

2

3

Clinical pregs/100 frozen transfers

---

100%
(1/1)

50%
(1/2)

33.30%
(1/3)

Live births/100 frozen transfers

---

100%
(1/1)

50.00%
(1/2)

33.30%
(1/3)

Average number of frozen embryos transferred

---

4
(4/1)

4
(8/2)

3.3
(10/3)

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