Table 2. Univariate and multivariate analysis to determine factors that influence TT levels.

Parameter	Univariate			Multivariate
	β	SE	p-value	β	SE	p-value
Age	−0.345	0.444	0.441	−0.896	0.404	0.0315
BMI	−0.771	0.404	0.0615	−0.628	0.390	0.1140
T-Chol	−0.649	0.482	0.1843	−0.593	0.422	0.1670
TG	−1.191	0.373	0.0024	−1.017	0.377	0.0097
Firmicutes	0.893	0.376	0.021	0.770	0.364	0.0396

TT: total testosterone, β: standardized partial regression coefficient, SE: standard error, BMI: body mass index, T-Chol: total cholesterol, TG: triglyceride.