“…Here, we adjusted for age, sex, ADHD, nicotine, MDMA, ICV, alcohol and cocaine use. - Model 3: Testing for the influence of alcohol on WM integrity. Here, we adjusted for age, sex, ADHD, nicotine, MDMA, ICV, levamisole and cocaine use.
Consistently, we included—apart from age, sex, ADHD and ICV—MDMA and nicotine in all models, as it has been shown that MDMA can alter GM and WM integrity, 88 whereas nicotine alters WM microstructure 89,90 …”