Characteristic | rFSH | hMG-HP | Chi-square | p-value |
---|---|---|---|---|
Total cycles started | ||||
(≤35 years) | 15422 | 5142 | ||
(≥36 years) | 7243 | 2823 | ||
Number of total cycles with oocytes retrieved | ||||
(≤35 years) | 15,293 (99.16%) | 5,137 (99.90%) | 32.55 | <0.0001 |
(≥36 years) | 7174 (99.05%) | 2821 (99.93%) | 22.55 | <0.0001 |
Cycles with positive pregnancy test as percent of cycles started | ||||
(≤35 years) | 5,440 (35.27%) | 1,741 (33.86%) | 3.40 | 0.0651 |
(≥36 years) | 2157 (29.78%) | 812 (28.76%) | 1.01 | 0.3150 |
Cycles with positive pregnancy test as percent of cycles with oocyte retrieved | ||||
(≤35 years) | 5,438 (35.56%) | 1,739 (33.85%) | 4.91 | 0.0267 |
(≥36 years) | 2157 (30.07%) | 812 (28.78%) | 1.60 | 0.2065 |
Any clinical pregnancy with positive pregnancy test | ||||
(≤35 years) | 5302 (97.50%) | 1739 (100%) | 44.33 | <0.0001 |
(≥36 years) | 2121 (98.33%) | 811 (99.88%) | 11.45 | 0.0007 |
Any clinical pregnancy as percent of cycles with oocyte retrieved | ||||
(≤35 years) | 5302 (34.67%) | 1739 (33.85%) | 1.14 | 0.2864 |
(≥36 years) | 2121 (29.57%) | 811 (28.75%) | 0.65 | 0.4197 |
Pregnancies ending in spontaneous abortion as percent of cycles with oocyte retrieved† | ||||
(≤35 years) | 860 (6.00%) | 297 (5.79%) | 0.30 | 0.5841 |
(≥36 years) | 443 (6.48%) | 181 (6.43%) | 0.0071 | 0.9329 |