Table 1.
Clinical characteristics for patients included in this study.
| Total number of patients | 205 | |
| Total number of eggs | 3523 | |
| Total number of 2PNs | 2142 | |
| Egg age (years) (mean ± SD) | 33.1 ± 5.1 | |
| Recipient age (years) (mean ± SD) | 35.7 ± 5.2 | |
| Cycle type | Patient using own eggs n (%) | 176/205 (86) |
| Oocyte donor n (%) | 29/205 (14) | |
| Reason for assisted reproductive technology | Male infertility n (%) | 39/205 (19) |
| History of endometriosis n (%) | 5/205 (2) | |
| Ovulation disorders n (%) | 14/205 (7) | |
| Diminished ovarian reserve n (%) | 33/205 (16) | |
| Tubal factor n (%) | 5/205 (2) | |
| Uterine n (%) | 2/205 (1) | |
| Unexplained/other n (%) | 53/205 (26) | |
| Multiple reasons n (%) | 54/205 (26) | |
| Stimulation protocol | Agonist luteal phase n (%) | 55/205 (27) |
| Agonist micro-dose flare n (%) | 11/205 (5) | |
| Antagonist suppression n (%) | 102/205 (50) | |
| Other n (%) | 37/205 (18) | |
| Egg retrieval count | Number of eggs (mean ± SD) | 17.4 ± 8.5 |
| Method of insemination | Intracytoplasmic sperm injection n (%) | 119/205 (58) |
| IVF n (%) | 76/205 (37) | |
| Both n (%) | 3/205 (1) | |
| Unknown n (%) | 7/205 (3) | |
| Fertilization count (mean ± SD) | Number of 2PNs (mean ± SD) | 10.6 ± 5.5 |