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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: Fertil Steril. 2009 Mar 3;93(7):2222–2231. doi: 10.1016/j.fertnstert.2009.01.100

Table 5.

Odds Ratios for below reference semen parameters

Body Mass Index (kg/m2)
18.5 – 24.9 ≥ 25 18.5 – 24.9 ≥ 25
Compared to above reference for same semen parameter Compared to above reference for all semen parameters
Sperm concentration <20×106/mL
 Below reference / Above reference 13 / 110 54 / 306 13 / 57 54 / 169
 Age-adjusted ref. 1.48 (0.78, 2.83) ref. 1.39 (0.70, 2.73)
 Multivariate-adjusted * ref. 1.45 (0.74, 2.84) ref. 1.51 (0.73, 3.11)
Motile sperm <50%
 Below reference / Above reference 64 / 59 160 / 200 64 / 57 160 / 169
 Age-adjusted ref. 0.72 (0.47, 1.08) ref. 0.81 (0.53, 1.24)
 Multivariate-adjusted * ref. 0.70 (0.46, 1.08) ref. 0.80 (0.52, 1.24)
Normal morphology sperm <4%
 Below reference / Above reference 17 / 106 86 / 274 17 / 57 86 / 169
 Age-adjusted ref. 1.95 (1.11, 3.44) ref. 1.68 (0.92, 3.06)
 Multivariate-adjusted * ref. 1.80 (1.00, 3.23) ref. 1.56 (0.83, 2.94)
*

Adjusted for age, race/ethnicity, abstinence time, smoking history, intakes of alcohol and caffeine, history of undescended testes and history of groin injury.