Table 2.

Linear regression analysis of log-transformed data.

Parameter	R2	β	P
Sperm concentration	0.001	0.026	0.34
Total sperm count	0.000	−0.007	0.80
Progressive sperm motility	0.120	+0.108	<0.00
Spermatozoa with normal morphology	0.001	−0.240	0.39
Semen volume	0.009	−0.09	<0.00
pH	0.044	0.21	<0.00
Leukocytes	0.002	0.53	0.05