| Table 1. Descriptive analysis of patient demographics and COS outcomes. |
| Variable |
General |
≤35 years old |
36-38 years old |
39-40 years old |
>40 years old |
| Mean |
SD |
Mean |
SD |
Mean |
SD |
Mean |
SD |
Mean |
SD |
| Patient's demographics |
| Maternal age (y) |
35.1 |
4.5 |
31.7 |
2.8 |
36.9 |
0.8 |
39.4 |
0.5 |
42.6 |
1.8 |
| Paternal age (y) |
38.0 |
6.6 |
35.7 |
5.9 |
39.3 |
6.1 |
41.3 |
6.0 |
43.0 |
6.7 |
| Total FSH administred (IU) |
2318.8 |
607.9 |
2185.9 |
580.2 |
2442.7 |
574.5 |
2508.9 |
621.0 |
2476.9 |
637.4 |
| COS outcomes |
| Aspirated follicles (n) |
16.5 |
12.1 |
15.0 |
9.8 |
14.6 |
10.7 |
11.0 |
8.0 |
8.0 |
6.8 |
| Retrieved oocytes (n) |
11.8 |
9.2 |
14.9 |
19.8 |
10.2 |
8.0 |
7.7 |
6.2 |
5.6 |
5.3 |
| Oocyte Yield (%) |
70.3 |
22.4 |
72.5 |
19.8 |
68.5 |
22.7 |
66.9 |
25.1 |
67.5 |
28.2 |
| Mature oocytes MII (n) |
8.9 |
7.0 |
11.2 |
7.5 |
7.7 |
6.0 |
6.0 |
4.8 |
4.3 |
4.0 |
| Mature oocytes rate (%) |
74.5 |
21.0 |
75.1 |
18.5 |
71.4 |
22.4 |
74.5 |
22.8 |
72.8 |
26.6 |
| Note: COS: controlled ovarian stimulation; FSH: follicle-stimulated hormone; SD: standard deviation. |