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Table 1 Population demographics and clinical profile by method of primary embryo transfer for 2014–2020 index autologous ART cycles without PGTa

From: Age-related increase in live-birth rates of first frozen thaw embryo versus first fresh transfer in initial assisted reproductive technology cycles without PGT

Method of Primary Embryo Transfer

FET

Fresh

Number (Patients)

62,100

166,071

Mean age at start (years)

32.9 ± 4.4

34.0 ± 4.5

Race/ethnicity (%)

  

White

44.6

45.9

Non-White

55.4

54.1

Asian

9.5

8.3

Black

6.9

5.8

Hispanic

6.4

5.8

Other

7.1

7.4

Unknown

25.5

26.7

Mean D3 FSH (IU/L)b

7.3 ± 3.2

7.8 ± 3.8

% Primary Etiology of Infertilityc

  

DOR

13.0

20.0

Tubal

16.1

15.9

Uterine

6.0

4.1

Ovulatory/PCOS

38.1

30.9

Endometriosis

8.6

8.8

Unexplained

14.2

17.8

Male factor

38.3

36.2

Mean number of Embryos Transferred

  

< 35

1.3 ± 0.5

1.4 ± 0.5

35–37

1.4 ± 0.5

1.6 ± 0.6

38–40

1.6 ± 0.6

2.0 ± 0.7

41–42

1.8 ± 0.9

2.3 ± 1.0

> 42

2.0 ± 1.2

2.4 ± 1.2

% of Day 5 Embryo Transfers

72.4

65.2

  1. aValues are means ± SD
  2. bDue to the large number of missing values for AMH, the AMH values were not reported
  3. cMultiple diagnoses of infertility were possible; therefore the totals are greater than 100%