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Table 1 Patients characteristics for each maternal age group

From: Comparing prediction of ongoing pregnancy and live birth outcomes in patients with advanced and younger maternal age patients using KIDScore™ day 5: a large-cohort retrospective study with single vitrified-warmed blastocyst transfer

 

<  35

35–37

38–40

41–42

≥ 43

Total

Cycle, n

292

405

613

490

682

2482

Maternal age(± SD)at ER

32.1 ± 1.9

36.1 ± 0.8

39.2 ± 0.8

41.5 ± 0.5

44.3 ± 1.4

39.7 ± 4.1

Paternal age(± SD)at ER

35.0 ± 4.9

37.9 ± 4.3

40.6 ± 4.4

43.0 ± 4.6

45.0 ± 5.1

41.2 ± 5.7

No. of previous ER(± SD)

2.2 ± 2.0 a

2.9 ± 2.7 b

3.5 ± 3.5 c

4.5 ± 4.1 d

7.8 ± 7.2 e

4.7 ± 5.2

No. of previous ET(± SD)

1.6 ± 1.6 a

2.3 ± 2.4 b

2.7 ± 2.7 c

3.2 ± 2.9 d

4.3 ± 4.0 e

3.0 ± 3.2

Etiology of infertility (%)

 Male factor

29.7

25.4

25.9

27.5

21.6

25.4

 Tubal factor

2.1

5.0

4.5

5.8

5.7

4.9

 Endometriosis

5.5

3.8

4.2

2.6

3.7

3.8

 Ovulation disorders

4.1 a

3.3 ab

2.2 ab

0.9 b

2.3 ab

2.4

 Uterine or cervical factor

3.8

4.0

4.9

6.0

7.0

5.4

 Combination

15.5 a

13.6 a

12.4 ab

9.8 ab

8.0 b

11.3

 Unknown

39.0 a

44.3 ab

45.8 ab

47.3 ab

51.7 b

46.6

 Other

0.3

0.5

0.2

0.2

0.2

0.1

  1. The different letter has statistically significant differences across the maternal age groups (P <  0.05)
  2. ER Egg retrieval, ET Embryo transfer, SD Standard deviation, SE Standard error