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