Demographic variables, drug consumption characteristics.

a<p>Mean (SD).</p>b<p>Including students.</p>c<p>Standardized mean difference.</p

Genotype distributions of the participants.

<p>Results as the number of subjects (n) and percentage per genotype (%).</p>a<p>The first of both values corresponds to the comparison of ecstasy users, cannabis users, and controls. The second (with an *) corresponds to the comparison of heavy ecstasy users, light ecstasy users, cannabis users, and controls.</p

Neuropsychological performance as a function of drug use status. Results are presented as mean (standard deviation).

<p>Neuropsychological performance as a function of drug use status. Results are presented as mean (standard deviation).</p