Table 1. Confounding parameters comparison, including age, BMI, smoking habit, alcohol intake, and abstinence period, between patients with varicocele and men without the pathology
	Varicocele		Logistic regression
	Yes (n=391)	No (n=2008)	Odds Ratio	95% Confidence Interval	p
Age (years)	37.7±6.3	37.8±6.6	1.00	0.98-1.01	0.97
BMI (kg/m2)	28.3±4.4	28.1±19.8	0.99	0.95-1.02	0.35
Smoking habit (%)	10.5	11.9	0.86	0.61-1.23	0.41
Alcohol intake (%)	66.2	67.0	0.97	0.77-1.22	0.77
Abstinence period (days)	3.6±9.1	3.6±2.7	1.00	0.98-1.02	0.84