From: Number of motile spermatozoa inseminated and pregnancy outcomes in intrauterine insemination
Total Cycles N = 2062 | Total N (%) | Clinical Pregnancy N [Rate (95% CI)] | P-Value |
Overall | |||
2062 (100.0) | 312 [15.1 (13.6–16.7)]b | ||
NMSI (×106) | |||
< 1 | 80 (3.9) | 3 [3.8 (1.1–9.7)] | 0.0007δ |
1–4 | 283 (13.7) | 36 [12.7 (9.2–17.0)] | |
5–9 | 245 (11.9) | 30 [12.2 (8.6–16.8)] | |
≥ 10 | 1454 (70.5) | 243 [16.7 (14.9–18.7)]b | |
Unknown | 3 | ||
Age (Years) | |||
< 30 | 348 (16.9) | 59 [17.0 (13.3–21.2)] | 0.09δ |
30–34 | 862 (41.8) | 135 [15.7 (13.4–18.2)] | |
35–39 | 723 (35.1) | 104 [14.4 (12.0–17.1)] | |
≥ 40 | 129 (6.3) | 14 [10.9 (6.4–17.1)] | |
OS Protocol | |||
None | 124 (6.1) | 6 [4.8 (2.0–9.7)] | 0.0003β |
Letrozole or Clomid | 210 (10.4) | 22 [10.5 (6.9–15.2)]a | |
Gonadotropins (± Letrozole or Clomid) | 1690 (83.5) | 280 [16.6 (14.9–18.4)]a | |
Unknown | 38 | ||
Number of Mature Follicles | |||
1 | 805 (41.9) | 101 [12.6 (10.4–15.0)]a | < 0.0001δ |
2 | 565 (29.4) | 86 [15.2 (12.4–18.4)] | |
3 | 284 (14.8) | 59 [20.8 (16.4–25.9)]a | |
4 | 126 (6.6) | 28 [22.2 (15.6–30.1)] | |
≥ 5 | 141 (7.3) | 29 [20.6 (14.5–27.8)] | |
Unknown | 141 | ||
Total Rounds N = 869 | Total N (%) | Clinical Pregnancy N [Rate (95% CI)] | |
Overall | |||
869 (100.0) | 312 [35.9 (32.8–39.1)] | ||
Average NMSI (×106) | |||
< 1 | 45 (5.3) | 4 [8.9 (3.1–19.8)] | < 0.0001δ |
1–4 | 93 (10.9) | 26 [28.0 (19.6–37.6)] | |
5–9 | 74 (8.7) | 26 [35.1 (25.0–46.4)] | |
≥ 10 | 643 (75.2) | 249 [38.7 (35.0–42.5)] | |
Unknown | 14 | ||
Age at Start of Round (Years) | |||
< 30 | 162 (18.6) | 65 [40.1 (32.8–47.8)] | 0.03δ |
30–34 | 364 (41.9) | 136 [37.4 (32.5–42.4)] | |
35–39 | 287 (33.0) | 98 [34.1 (28.8–39.8)] | |
≥ 40 | 56 (6.4) | 13 [23.2 (13.7–35.4)] |