Table 4.

Association between serum levels of testosterone and PSA from 119 middle–aged healthy men from the general population.

Variables	PSA (µg/l)
	β	p	95 % CI lower	95 % CI upper
Testosterone (nmol/l) 0.03	0.03	0.003	0.062

Statistical analysis was done using multivariate regression analysis model adjusted for the age of men (46–50, 54–55, and 56–60 years); BMI (< 25, 25.1–29.9, and ≥ 30 kg/cm²); waist–to–hip ratio; smoking (yes, past/current); alcohol consumption (yes, no). P-values below 0.05 are considered statistically significant.