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Table 6 Odds of Clinical Pregnancy per cycle according to NMSI and Age Category

From: Number of motile spermatozoa inseminated and pregnancy outcomes in intrauterine insemination

Unadjusted Models   Model 1
Age < 35
(N = 1208 cycles from 455 couples)
  Model 2
≥35
(N = 852 cycles from 315 couples)
NMSI Category N OR (95%CI) P-Value N OR (95%CI) P-Value
 0–4 227 0.48 (0.30–0.77) 0.002 136 0.84
(0.46–1.54)
0.57
 5–9 142 0.65 (0.38–1.11) 0.12 103 0.78
(0.39–1.54)
0.47
 ≥10 839 Ref 613 Ref
Adjusted Models   < 35
(N = 1053 cycles from 389 couples)
  ≥35
(N = 742 cycles from 269 couples)
NMSI Category   OR (95%CI) P-Value   OR (95%CI) P-Value
 0–4 204 0.49 (0.29–0.83) 0.007 119 1.55 (0.72–3.31) 0.26
 5–9 127 0.66 (0.37–1.18) 0.17 94 1.04 (0.48–2.27) 0.92
 ≥10 722 Ref 529 Ref
Duration of Infertility (Months)
  < 12 76 Ref 97 Ref
 12–23 501 0.82 (0.42–1.62) 0.57 354 0.91 (0.44–1.91) 0.81
 24–35 268 0.98 (0.48–2.01) 0.96 138 0.91 (0.40–2.09) 0.82
  ≥ 36 208 0.51 (0.23–1.12) 0.09 153 0.70 (0.31, 1.59) 0.39
Cause of Infertility
 Unexplained 427 0.93 (0.62–1.38) 0.70 336 0.97 (0.60–1.65) 0.91
 Male & Female Factor 51 0.53 (0.20–1.41) 0.21 65 0.45 (0.09–2.35) 0.35
 Male Factor 218 0.93 (0.58–1.50) 0.77 138 0.21 (0.08–0.53) 0.001
 Female Factor 357 Ref 203 Ref