Table 2a.

Fertilization rate described as function of sperm motility, sperm concentration, normal sperm morphology and acrosome reaction, that is, model: fertilization rate = f_{(motility, sperm concentration, morphology, scrosome teaction)}, n = 67

Testing global null hypothesis (likelihood ratio)
Chi‐square	Degrees of freedom	P‐value
9.550	4	0.049
Analysis of maximum likelihood estimates
Parameter	Odds ratio and 95% CI	P‐value
Motility	0.719 (0.250; 2.065)	0.540
Sperm concentration	2.238 (0.740; 6.767)	0.153
Morphology	3.348 (1.139; 9.841)	0.028
Acrosome reaction	0.625 (0.206; 1.898)	0.407