Table 2 Treatment characteristics in fresh ET and FET groups
Parameters | Fresh ET (n = 5216) | FET (n = 2598) | P |
|---|---|---|---|
Ovarian stimulation (days) | 10.90 ± 1.30 | 10.85 ± 1.28 | 0.180 |
Gonadotropin dose (IU) | 2274.50 ± 740.08 | 1938.81 ± 652.88 | < 0.001 |
Estradiol level on hCG trigger day (pg/ml) | 3235.65 ± 1196.11 | 4480.45 ± 789.60 | < 0.001 |
No. of oocytes retrieved | 10.49 ± 3.77 | 17.97 ± 5.47 | < 0.001 |
Insemination method |  |  | < 0.001 |
 IVF, n (%) | 4376 (83.9) | 2095 (80.6) |  |
 ICSI, n (%) | 840 (16.1) | 503 (19.4) |  |
No. of available embryos | 4.00 ± 2.03 | 5.44 ± 2.69 | < 0.001 |