Table 3. Factors predictive of penile circumference.

Variables	Univariate analysis				Multivariable analysis*
	Beta	95% CI	P value		Beta	95% CI	P value
Age			0.063
Height	0.125	0.003, 0.027	0.015
Weight	0.201	0.005, 0.015	0.001		0.151	0.002, 0.012	0.008
BMI	0.167	0.011, 0.045	0.001
TTT			0.688
Testis size	0.213	0.007, 0.021	0.001		0.173	0.004, 0.019	0.002
Nose volume	0.169	0.041, 0.167	0.001
Foot size	0.146	0.003, 0.016	0.005

Significant variables (P<0.05) according to the univariate analysis were included in the multivariable analysis. * Linear regression model (stepwise selection). BMI, body mass index; TTT, testosterone.