Table 2 Baseline characteristics and clinical data of patients in total-FET cycles
Characteristic | NC-FET | HRT-FET | p-value |
|---|---|---|---|
N | 1331 | 1705 | |
Female age (y) | 32.18 ± 4.36 | 32.18 ± 4.42 | 0.576 |
Male age (y) | 34.44 ± 5.28 | 34.80 ± 5.42 | 0.235 |
History of infertility (y) | 3.46 ± 2.28 | 3.47 ± 2.49 | 0.675 |
Female BMI (kg/m2) | 21.37 ± 2.13 | 21.30 ± 3.06 | 0.876 |
Endometrial thickness during FET | 9.34 ± 0.65 | 9.27 ± 0.23 | 0.834 |
Number of embryos transferred | 1.17 ± 0.37 | 1.20 ± 0.40 | 0.123 |
Number of gestational sac by ultrasound | 0.593 | ||
1 | 1090 | 1335 | |
2 | 233 | 364 | |
3 | 7 | 6 | |
4 | 1 | 0 | |
Number of live births | 0.113 | ||
1 | 1126 | 1416 | |
2 | 183 | 239 | |
3 | 2 | 2 | |
During pregnancy | 0 | 0 | |
Middle and late stage abortion or induced labor / Stillbirth | 19 | 40 | |
Gender of live birth (single fetus) | 0.447 | ||
Male | 596 | 771 | |
Female | 530 | 645 | |
loss to follow-up | 1 | 8 | 0.113 |
Endometriosis | 0.086 | ||
Present | 100 | 158 | |
Absent | 1231 | 1547 | |
Hypertensive disorders of pregnancy | |||
Present | 37 (2.8%) | 104 (6.1%) | <0.001 |
Absent | 1294 (97.2%) | 1601 (93.9%) | |