Table 3. Correlation between sperm DNA fragmentation index (DFI) and lifestyle and semen routine parameters.

Semen routine parameters	DFI
	r	P
Age (years)	0.159	<0.01*
BMI (kg/m2)	0.002	0.95
Abstinence time (days)	0.133	<0.01*
Liquefaction time (hours)	−0.05	0.07
Smoke (yes/no)	0.109	<0.01*
Alcohol (yes/no)	0.064	0.01*
Volume (mL)	0.027	0.17
Concentration (106/mL)	−0.307	<0.01*
Sperm progressive motility (%)	−0.552	<0.01*
Normal morphology rate (%)	−0.620	<0.01*

*, statistical significant.