Table 1.
Demographic characteristics and treatment parameters (all patients)
| Single IUI (n = 1283) | Double IUI (n = 21,169) | |
|---|---|---|
| Age (year) | 34.0 ± 5.38 | 34.7 ± 4.49 |
| BMI (kg/m2)1 | 26.0 ± 6.40 | 26.1 ± 6.56 |
| Cycle number, n (%) | ||
| • < 3 | • 954 (74%) | • 15,331 (72%) |
| • > 3 | • 329 (26%) | • 5838 (28%) |
| Donor sperm, n (%) | ||
| • Donor | • 187(15%) | • 1461(6.9%) |
| • Autologous | • 1096(85%) | • 19,708 (93%) |
| Stimulation type | ||
| • Clomiphene | • 357 (28%) | • 4140 (20%) |
| • Letrozole | • 51 (4.0%) | • 343 (1.6%) |
| • Natural | • 141 (11%) | • 822 (3.9%) |
| • Gonadotropin | • 711 (55%) | • 15,454 (73%) |
| • Unknown | • 23 (1.8%) | • 410 (1.9%) |
| Number of follicles (> 17 mm) | 0.943 ± 0.933 | 1.008 ± 0.941 |
| Peak estradiol (pg/mL) | 454.79 ± 415 | 508.81 ± 407 |
| Post-wash total motile sperm count #1 (M)2 | 36.42 ± 45.9 | 49.72 ± 53.2 |
| Post-wash total motile sperm count #2 (M)2 | – | 38.20 ± 38.2 |
11016 cycles were excluded due to either missing data or extreme BMI values (< 10 and > 70 kg/m2). 2314 cycles were excluded due to either missing data or extreme values for post tot mot (> 2000 M)