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The worldwide prevalence of ADHD: a systematic review and metaregression analysis.
OBJECTIVE The worldwide prevalence estimates of attention deficit hyperactivity disorder (ADHD)/hyperkinetic disorder (HD) are highly heterogeneous. Presently, the reasons for this discrepancy remainExpand
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Annual research review: A meta-analysis of the worldwide prevalence of mental disorders in children and adolescents.
BACKGROUND The literature on the prevalence of mental disorders affecting children and adolescents has expanded significantly over the last three decades around the world. Despite the field havingExpand
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Validity of DSM-IV attention deficit/hyperactivity disorder symptom dimensions and subtypes.
Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) criteria for attention deficit/hyperactivity disorder (ADHD) specify two dimensions of inattention andExpand
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Discovery of the first genome-wide significant risk loci for attention deficit/hyperactivity disorder
Attention deficit/hyperactivity disorder (ADHD) is a highly heritable childhood behavioral disorder affecting 5% of children and 2.5% of adults. Common genetic variants contribute substantially toExpand
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ADHD prevalence estimates across three decades: an updated systematic review and meta-regression analysis.
BACKGROUND Previous studies have identified significant variability in attention-deficit / hyperactivity disorder (ADHD) prevalence estimates worldwide, largely explained by methodologicalExpand
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Epidemiology of attention-deficit/hyperactivity disorder across the lifespan
Purpose of review Prevalence estimates of the attention-deficit hyperactivity disorder (ADHD) and the rate of persistence of symptoms across the lifespan are heterogeneous, raising questions aboutExpand
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Association Between ADHD and Obesity: A Systematic Review and Meta-Analysis.
OBJECTIVE Impulsivity and inattention related to attention deficit hyperactivity disorder (ADHD) may increase food intake and, consequently, weight gain. However, findings on the association betweenExpand
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ADHD in a school sample of Brazilian adolescents: a study of prevalence, comorbid conditions, and impairments.
OBJECTIVE To evaluate the prevalence, comorbid conditions, and impairments of attention-deficit/hyperactivity disorder (ADHD) among young adolescents in Porto Alegre, Brazil. METHOD 1,013 studentsExpand
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Is Adult ADHD a Childhood-Onset Neurodevelopmental Disorder? Evidence From a Four-Decade Longitudinal Cohort Study.
OBJECTIVE Despite a prevailing assumption that adult ADHD is a childhood-onset neurodevelopmental disorder, no prospective longitudinal study has described the childhoods of the adult ADHDExpand
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Does the prevalence of CD and ODD vary across cultures?
PurposeThe worldwide prevalence of conduct disorder (CD) and oppositional defiant disorder (ODD) is presented to examine the first of four criteria used in other studies to determine the validity ofExpand
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