Table 2.
Cycle characteristics of first oocyte donation cycle patients according to age of oocyte donor
| Donor age (years) | ||||||
|---|---|---|---|---|---|---|
| All cycles N = 774 |
< 25 n = 269 |
25–< 30 n = 399 |
P * | 30–< 35 n = 106 |
P † | |
| All cycles | ||||||
| Oocytes retrieved | 18.0 (13.0–25.0) | 19.0 (14.0–26.0) | 18.0 (13.0–25.0) | 0.18 | 16.0 (10.0–21.0) | 0.003 |
| Mature oocytes retrieved | 15.0 (11.0–21.0) | 16.0 (12.0–22.0) | 15.0 (11.0–21.0) | 0.62 | 13.5 (9.0–18.0) | 0.002 |
| Donor sperm | 51 (6.6) | 17 (6.3) | 28 (7.0) | 0.72 | 6 (5.7) | 0.81 |
| Intracytoplasmic sperm injection | 336 (43.4) | 121 (45.0) | 175 (43.9) | 0.77 | 40 (37.7) | 0.26 |
| Fertilization success | 70.0 (54.6–80.0) | 68.2 (52.9–77.8) | 70.0 (55.6–79.0) | 0.25 | 73.5 (58.0–85.7) | 0.07 |
| Mature fertilization success | 80.0 (66.7–90.0) | 79.5 (66.7–90.0) | 80.0 (66.7–88.9) | 0.82 | 83.3 (70.3–94.1) | 0.12 |
| Preimplantation genetic testing for aneuploidy | 3 (0.4) | 0 (0.0) | 1 (0.3) | 0.60 | 2 (1.9) | 0.08 |
| Canceled cycles | 28 (3.6) | 13 (4.8) | 15 (3.8) | 0.50 | 0 (0.0) | 0.049 |
| Embryo transfer cycles | ||||||
| Embryos transferred | 2.0 (2.0–2.0) | 2.0 (2.0–2.0) | 2.0 (2.0–2.0) | 0.68 | 2.0 (2.0–2.0) | 0.06 |
| Day of transfer | 0.49 | 0.34 | ||||
| Day 3 | 482 (70.4) | 165 (69.9) | 243 (69.4) | 74 (74.8) | ||
| Day 5/6 | 197 (28.8) | 70 (29.7) | 102 (29.1) | 25 (25.3) | ||
| Other | 6 (0.9) | 1 (0.4) | 5 (1.4) | 0 (0.0) | ||
Data are presented as median (interquartile range) or n (%)
*P is comparing 25–< 30 years to < 25 years
†P is comparing 25–< 30 years to 30–< 35 years