OBJECTIVE: Genetic studies of attention-deficit/hyperactivity disorder (ADHD) generally use
discrete DSM-IV subtypes to define diagnostic status. To improve correspondence between …

Background: Findings from family and twin‐based studies of Attention Deficit/Hyperactivity
Disorder (ADHD) have indicated that inattentive and combined subtypes cluster together …

ADHD (Attention Deficit Hyperactivity Disorder) has a complex, heterogeneous phenotype
only partially captured by Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) …

Previous studies have looked at the structure of attention-deficit/hyperactivity disorder
(ADHD) using latent class analysis (LCA) of Child Behavior Checklist (CBCL) or Diagnostic …

Statistically based classification methods have successfully refined ADHD into homogenous
and heritable subtypes. External validity and impairment of these subtypes was examined …

OBJECTIVE: New attention-deficit/hyperactivity disorder (ADHD) subtypes identified through
latent class analysis have been recently proposed. Here, we assess the accuracy of simple …

OBJECTIVES:: Little is known about how genes influence the development of symptoms
included in the DSM-IV subtypes of attention-deficit/hyperactivity disorder (ADHD) from …

Attention-deficit/hyperactivity disorder (ADHD) is a phenotypically heterogeneous and highly
heritable syndrome, which commonly co-occurs with other psychiatry disorders. To assess …

A widely used statistical method to test for genetic association is the transmission
disequilibrium test (TDT) using two parent–proband trios. West et al 1 have presented …

Objective To evaluate the prevalence and major comorbidities of ADHD using different
operational definitions in a newly available national dataset and to test the utility of …