Figure 2From: Bulky DNA adducts in human sperm associated with semen parameters and sperm DNA fragmentation in infertile men: a cross-sectional study Association between logarithm of the sperm concentration and sperm PAH-DNA adduct. Adjusted for age, smoking, alcohol drinking, BMI and abstinence time, the PAH-DNA adduct levels were significantly associated with sperm concentration using a linear regression: beta coefficients = −0.632, P < 0.001.Back to article page