Table 1.
Characteristics of FPS and LPS
| FPS (n = 29) | LPS (n = 21) | P | |
|---|---|---|---|
| Age at OPU (y) | 35.3 ± 4.0 | 37 ± 3.1 | 0.12 |
| AMH (ng/mL) | 3.8 ± 2.5 | 3.5 ± 2.5 | 0.66 |
| Baseline FSH (mIU/mL) | 8.0 ± 3.5 | 7.0 ± 3.2 | 0.28 |
| Peak E2 (pg/mL) | 595.2 ± 491.1 | 530.9 ± 538.1 | 0.66 |
| Endometrial thickness (mm) | 10.0 ± 2.0 | 11.3 ± 3.3 | 0.089 |
| No. of follicles > 17 mm | 2.6 ± 2.0 | 2.7 ± 2.6 | 0.84 |
| Peak follicle size (mm) | 19.2 ± 2.8 | 18.9 ± 2.6 | 0.74 |
| No. of days stimulated | 9.0 ± 1.9 | 11.3 ± 2.6 | <0.001 |
| Total FSH/HMG dose (IU) | 1290.5 ± 586.2 | 1957.1 ± 1030.2 | 0.0056 |
| No. of retrieved oocytes | 8.7 ± 6.0 | 10.0 ± 6.8 | 0.48 |
| Mature (MII) oocytes (%) | 83.3 (125/150) | 81.7 (49/60) | 0.84 |
| MI oocytes (%) | 4.0 (6/150) | 6.7 (4/60) | 0.48 |
| GV oocytes (%) | 11.3 (17/150) | 8.3 (5/60) | 0.62 |
| Degenerated oocytes (%) | 1.3 (2/150) | 3.3 (2/60) | 0.32 |
| Fertilization rate (%) | |||
| IVF | 62.5 (35/56) | 47.1 (48/102) | 0.069 |
| ICSI | 70.3 (26/37) | 90.0 (36/40) | 1 |
FPS, follicular phase ovarian stimulation; GV, germinal vesicle; ICSI, intracytoplasmic sperm injection; IVF, in vitro fertilization; LPS, luteal phase ovarian stimulation; MI, metaphase I; MII, metaphase II; OPU, ovum pick up. Data are presented as mean ± SD. Mature oocytes were calculated in cases of oocyte cryopreservation (n = 28). Fertilization rate was calculated in cases of embryo cryopreservation (n = 25)