Table 4.

Association of sperm concentration with various clinical parameters.

	Correlation Coefficient r	p (Univariate)	Correlation Coefficient ß	p (Multivariate)
Age (years)	0.023	0.556	0.061	0.409
IPSS total score	0.039	0.342	−0.175	0.163
IIEF total score	−0.034	0.147	−0.058	0.435
CPSI total score	0.053	0.213	0.309	0.015
Testicular volume (mL)	0.063	0.212	0.236	0.814
Prostate volume (mL)	0.107	0.023	0.038	0.587
CRP (mg/L)	−0.016	0.692	−0.018	0.709
PSA (ng/mL)	0.022	0.579	−0.062	0.206
Estradiol (pg/mL)	−0.044	0.367	−0.058	0.271
Total testosterone (ng/dL)	0.009	0.831	0.038	0.472

Multivariate analysis: univariate and multivariate regression analysis between sperm concentration and andrological parameters, n = 673.