Skip to main content

Table 3 Pregnancy outcomes by cycles and rounds

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)]
  1. a1 unknown clinical pregnancy outcome
  2. b2 unknown clinical pregnancy outcomes
  3. δΧ2 test for trend
  4. βΧ2 test
\