Table 1 Basic information of patients in the two groups
Group A (n = 446) | Group B (n = 1200) | P | |
|---|---|---|---|
Maternal age (y) | 29.0 ± 3.8 | 28.6 ± 3.2 | 0.05 |
Body mass index (kg/m2) | 22.9 ± 3.3 | 22.7 ± 3.1 | 0.17 |
Duration of infertility (y) | 3.5 ± 2.5 | 3.4 ± 2.5 | 0.35 |
Male age (y) | 30.5 ± 4.8 | 29.9 ± 4.6 | 0.01 |
Type of infertility | 0.47 | ||
Primary infertility | 266 (59.6%) | 692 (57.7%) | |
Secondary infertility | 180 (40.4%) | 508 (42.3%) | |
Cause of infertility | 0.12 | ||
Tubal disease | 248 (55.6%) | 688 (57.3%) | |
Male factor | 110 (24.7%) | 297 (24.8%) | |
Endometriosis | 62 (13.9%) | 176 (14.7%) | |
Unexplained | 26 (5.8%) | 39 (3.3%) | |
Endometrial thickness (mm) | 11.4 ± 2.3 | 11.3 ± 2.2 | 0.33 |
Insemination method | 0.81 | ||
IVF | 326 (73.1%) | 870 (72.5%) | |
ICSI | 120 (26.9%) | 330 (27.5%) |