Table 1.
Baseline characteristics by group.
| Frozen sperm (N=447) |
Fresh sperm (N=1,341) |
P-value | |
|---|---|---|---|
| Female age | 36.85 ± 5.48 | 36.81 ± 5.50 | 0.908 |
| Male age | 39.35 ± 6.90 | 39.35 ± 6.71 | 0.778 |
| Female body mass index | 21.86 ± 3.22 | 21.78 ± 3.04 | 0.722 |
| Primary infertility | 172 (38.5) | 524 (39.1) | 0.867 |
| Duration of infertility | 4.21 ± 4.00 | 4.15 ± 3.97 | 0.811 |
| Female infertility diagnosis |
0.928 | ||
| Tubal | 126 (28.2) | 369 (27.5) | |
| Mix/other factors | 291 (65.1) | 886 (66.1) | |
| Unexplained | 30 (6.7) | 86 (6.4) | |
| Gravidity ≥1 (%) | 273 (61.1) | 809 (60.3) | 0.823 |
| Parity ≥1 (%) | 80 (17.9) | 242 (18.0) | 1.000 |
| Treatment protocol (%) | 0.966 | ||
| PPOS | 232 (51.9) | 722 (53.8) | |
| Mild stimulation | 93 (20.8) | 276 (20.6) | |
| GnRH-ant protocol | 31 (6.9) | 81 (6.0) | |
| Long protocol | 38 (8.5) | 103 (7.7) | |
| Short protocol | 26 (5.8) | 78 (5.8) | |
| Natural cycle | 27 (6.0) | 81 (6.0) | |
| OPU year (%) | 0.790 | ||
| 2011–2013 | 150 (33.6) | 425 (31.7) | |
| 2014–2015 | 149 (33.3) | 443 (33.0) | |
| 2016–2018 | 110 (24.6) | 342 (25.5) | |
| 2019–2021 | 38 (8.5) | 131 (9.8) |
Data are presented as mean ± standard deviation or number (percentage).
PPOS, progestin-primed ovarian stimulation; OPU, oocyte pick-up.