Fig. 6
From: Effects of alcohol use on sperm chromatin structure, a retrospective analysis
Shows the sperm count in a semen sample from 209 human male infertility subjects compared to their tobacco use status. There were 45 smokers and 164 non-smokers. The mean and median sperm count in non-smokers was higher. This difference was significant when tested with a logistic regression model (p = 0.0015)