Table 1.
Characteristics of patients undergoing fresh cycles with embryo transfer.
| Mean (SD) or Median (Q1-Q3) | N (%) | |
|---|---|---|
| Female age(year) | 31.16 (4.39) | |
| Female age group(year) | ||
| <35 | 32,816 (77.89%) | |
| >=35, <40 | 7,694 (18.26%) | |
| >=40 | 1,622 (3.85%) | |
| BMI (kg/m2) | 22.34 (3.12) | |
| BMI group(kg/m2) | ||
| <18.5 | 3,315 (7.91%) | |
| >=18.5, <24.9 | 30,712 (73.28%) | |
| >=24.9, <30 | 7,064 (16.86%) | |
| >=30 | 819 (1.95%) | |
| Infertility type | ||
| Primary Infertility | 22,505 (54.37%) | |
| Secondary Infertility | 18,887 (45.63%) | |
| Basal AMH(ng/ml) | 3.13 (1.92-4.98) | |
| Basal FSH(mIU/ml) | 7.30 (1.99) | |
| Basal E2(pg/ml) | 45.88 (25.79) | |
| Duration of infertility(year) | 3.00 (2.00-5.00) | |
| AFC | 11.71 (4.92) | |
| COS protocols | ||
| GnRH agonist protocol | 34,388 (81.62%) | |
| GnRH antagonist protocol | 7,744 (18.38%) | |
| Gn dosage(IU) | 2389.14 (892.99) | |
| Gn duration(day) | 10.36 (2.18) | |
| E2 level on hCG trigger day(pg/ml) | 2263.00 (1348.89-3571.75) | |
| LH level on hCG trigger day(mIU/ml) | 1.73 (1.05-2.70) | |
| P level on hCG trigger day(ng/ml) | 0.94 (0.65-1.35) | |
| EMT on hCG trigger day (mm) | 11.61 (2.45) | |
| No. of retrieved oocytes | 9.75 (4.53) | |
| No. of embryo transfer | 1.61(0.49) | |
| Embryo type | ||
| Embryos in cleavage stage | 33,476 (79.48%) | |
| Blastocyst | 8,459 (20.08%) | |
| others | 182 (0.43%) | |
| Embryo quality | ||
| good | 30,039 (71.62%) | |
| Not good | 11,886 (28.34%) | |
| others | 19 (0.05%) | |
| Miscarriage rate(%) | 3039 (12.64%) | |
| Live birth rate(%) | 18,243 (43.30%) | |
| Clinical pregnancy rate(%) | 24,048 (57.08%) |
BMI, body mass index; AMH, anti-Mullerian hormone; AFC, antral follicle counting; controlled COS, ovarian stimulation; GnR,H gonadotropin-releasing hormone; Gn, gonadotropin; E2, estradiol; LH, luteinizing hormone; P, progesterone; EMT, endometrium thickness.