|
Parameter
|
Day 3 ET
|
Day 5 ET
|
|---|
| |
(n = 10,864)
|
(n = 1146)
|
|
Age (years)
|
31.3 ± 5.1
|
29.7 ± 4.5
|
|
BMI (kg/m2)
|
22.0 (3.0)
|
22.0 (4.5)
|
|
bFSH (IU/L)
|
7.16 (2.5)
|
6.57 (2.0)
|
|
Duration of infertility (years)
|
3 (4)
|
3 (3)
|
|
Primary infertility (%)
|
49.2
|
55.2
|
|
Second infertility (%)
|
50.8
|
44.8
|
|
First treatment cycle (%)
|
84.3
|
88.1
|
|
Cause of infertility (%)
| | |
|
tubal pathology
|
44.5
|
58.5
|
|
male factors
|
27.5
|
29.8
|
|
advanced age (≥35 years)
|
11.1
|
14.6
|
|
PCOS
|
6.2
|
11.5
|
|
endometriosis
|
3.5
|
3.3
|
|
pelvic pathology
|
6.5
|
6.5
|
|
others
|
3.8
|
4.1
|
|
unexplained factors
|
13.3
|
11.2
|
|
ART (%)
| | |
|
IVF
|
69.8
|
72.2
|
|
ICSI
|
28.8
|
25.6
|
|
IVF + ICSI
|
1.4
|
2.2
|
|
Stimulation protocol (%)
| | |
|
GnRH-a long protocol
|
82.8
|
93.5
|
|
GnRH-a prolonged (modified) protocol
|
11.1
|
5.8
|
-
Note: ART: assisted reproductive technology; IVF + ICSI: IVF + rescue ICSI or IVF + late ICSI; GnRH-a: gonadotropin-releasing hormone agonist; PCOS: polycystic ovary syndrome
