Figure 1From: Amphetamine Dependence and Co-Morbid Alcohol Abuse: Associations to Brain Cortical ThicknessYears of heavy amphetamine use and heavy alcohol use. The correlation between years of heavy amphetamine use and heavy alcohol use in the current patient sample was significant in patients with 10 or more years heavy alcohol use, but not in patients with less. The black slanted line shows the line of best fit for this subset. The vertical line marks patients with 10 or more years of heavy alcohol use.Back to article page