Predictive Ability for Drug Use in Sub-Clinical Students with Attention Deficit Hyperactivity Disorder by Questionnaire Survey

read with interest the article by Bayrami et al., reporting the predictive ability of drug use for subjects with attention deficit hyperactivity disorder (ADHD) symptoms. The target 361 subjects were sampled randomly from 5129 university students, and a cross-sectional survey was conducted by using a questionnaire. Recently, Lichtenstein et al. conducted a follow-up study to know the effect of medication for 25,656 ADHD patients on criminality.