To use a single national data source to discern trends in the prevalence of office-based visits resulting in a diagnosis of attention deficit hyperactivity disorder (ADHD) among girls, and trends in the prescribing of stimulant pharmacotherapy (including methylphenidate) for its treatment in the US.
Pharmacoeconomics and Pharmacoepidemiology Research Unit, College of Pharmacy, Washington State University, Pullman, Washington 99164-6510, USA. lrobison@wsu.edu
