| Corifollitropin alfa | rFSH | ||
---|---|---|---|---|
 | Step-down | Fixed dose | Step-down | Fixed dose |
 | n = 138 | n = 409 | n = 79 | n = 430 |
Duration of stimulation, days, mean (SD) | 10.0 (1.1) | 10.1 (1.3) | 9.8 (1.1) | 9.8 (1.0) |
Follicles on day 8 ≥11 mm, mean (SD) | 15.2 (5.1) | 10.5 (5.4) | 14.1 (5.3) | 9.6 (4.7) |
E 2 on day 8, pmol/l, median (P5, P95) | 4734 | 2341 | 4184 | 2415 |
(1431, 8918) | (738, 6019) | (995, 10,606) | (910, 6276) | |
Follicles on day of hCG ≥11 mm, mean (SD) | 20.5 (5.3) | 14.1 (6.2) | 18.0 (6.1) | 12.6 (5.3) |
Serum E 2 on day of hCG, pmol/l, median (P5, P95) | 7817 | 4147 | 7212 | 4221 |
(2393, 13,799) | (1497, 10,239) | (1655, 16,772) | (1696, 9726) | |
No. of oocytes retrieved, mean (SD) | 19.4 (8.1) | 12.4 (7.4) | 16.5 (6.4) | 11.8 (6.4) |
No. of embryos obtained on day 3, mean (SD) | 11.8 (6.0) | 7.5 (5.2) | 10.2 (5.2) | 7.1 (4.5) |
No. of GQEs obtained on day 3, mean (SD) | 6.5 (5.7) | 4.1 (3.8) | 5.5 (4.4) | 4.3 (3.7) |
No. of GQEs transferred, mean (SD) | 1.1 (0.8) | 1.3 (0.8) | 1.3 (0.7) | 1.3 (0.8) |
Cycle cancellation rate, n (%) | 15 (10.9) | 30 (7.3) | 4 (5.1) | 23 (5.3) |