title: Why does the worldwide prevalence of childhood attention deficit hyperactivity disorder matter?
authors.forename: Terrie E
authors.initials: TE
authors.lastname: Moffitt
authors.forename: Maria
authors.initials: M
authors.lastname: Melchior
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis / Q000453:epidemiology*; D015982:Bias; D002648:Child; D002652:Child Behavior / Q000145:classification / Q000523:psychology; D003431:Cross-Cultural Comparison; D039721:Diagnostic and Statistical Manual of Mental Disorders; D014943:Global Health; D006801:Humans; D038801:International Classification of Diseases / Q000706:statistics & numerical data; D015995:Prevalence; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data; D012107:Research Design