Table 1 Demographic characteristics of participants
Chinese (n=96) | Caucasians (n=96) | P value | |
|---|---|---|---|
Age of women (years) | 37 (35-38) | 35 (32-37) | <0.01 |
Height of women (cm) | 162.0 (157.3-165.3) | 165.0 (162.0-170.0) | <0.01 |
Body mass index (kg/m2) | 25.2 (23.6-27.3) | 23.8 (22.3-26.7) | 0.02 |
Primary infertility | 64 (66.7%) | 60 (62.5%) | 0.34 |
Cause of infertility | <0.01 | ||
Endometriosis Male Tubal Unexplained Mixed Anovulation Same sex Donor sperm Fertility cryopreservation PGT | 4 (4.2%) 43 (44.8%) 11 (11.4%) 24 (25.0%) 10 (10.4%) 4 (4.2%) 0 (0%) 0 (0%) 0 (0%) 0 (0%) | 3 (3.1%) 25 (26.0%) 2 (2.1%) 39 (40.6%) 3 (3.1%) 0 (0%) 9 (9.4%) 7 (7.3%) 4 (4.2%) 4 (4.2%) | |
Duration of infertility (years) | 4.2 (3.0-6.0) | 1.8 (1.0-2.0) | <0.01 |
Previous IVF cycles before | 23 (25.0%) | 27 (28.1%) | 0.62 |
Non-smoker/ ex-smoker (quitted at least 1 year) | 84 (87.5%) | 91 (94.8%) | 0.07 |
Regular cycles | 85 (88.5%) | 88 (91.7%) | 0.38 |
Antral follicle count | 11 (8-14) | 14 (10-17) | 0.03 |
AMH (pmol/L) | 14.7 (10.0- 20.3) | 11.8 (6.3- 22.7) | 0.33 |