Clinical Factors Associated with Sperm DNA Fragmentation in Male Patients with Infertility

Table 5

The attributes of the clinical parameters associated with DNA damage in the multiple linear regression.

Parameter	Standardized partial regression coefficient	𝑃 value	95% confidence interval
			Lower limit	Upper limit
Model 1
Chronic alcohol use; (+) versus (−)	0.2744	0.0394*	0.2922	11.1788
Serum FSH; ≥5.6 versus <5.6 (mIU/mL)	0.1429	0.2466	−2.1513	8.1519
Normal sperm morphology; ≥1.5 versus <1.5 (%)	−0.0557	0.6813	−6.8560	4.5226
Sperm progressive motility; ≥33.0 versus <33.0 (%)	−0.4864	0.0008*	−15.9232	−4.5046
Total sperm count; ≥97.0 versus <97.0 (million)	−0.0605	0.6369	−6.6348	4.1036
Linearity; ≥0.4 versus <0.4	−0.0471	0.7221	−6.5417	4.5696
Proportion of vacuolated sperm; ≥19.0 versus 19.0 (%)	0.0669	0.5782	−3.6395	6.4395
Model 2
Chronic alcohol use; (+) versus (−)	0.3069	0.0068*	1.9444	11.5084
Sperm progressive motility; ≥33.0 versus <33.0 (%)	−0.5381	<0.0001*	−16.5970	−7.0193

ALH: amplitude of lateral head displacement; FSH: follicle-stimulating hormone; ∗statistically significant.