title: An analysis of patient adherence to treatment during a 1-year, open-label study of OROS methylphenidate in children with ADHD.
abstract: OBJECTIVE
  Treatment adherence is an important aspect of ADHD symptom management, but there are many factors that may influence adherence.
  
  
  METHODS
  This analysis assessed adherence to OROS methylphenidate during a 1-year, open-label study in children. Adherence was defined as the number of days medication was taken divided by the number of days in the study and determined to be high if > or =75%. Possible clinical and demographic factors associated with adherence, including use of planned medication breaks, were assessed.
  
  
  RESULTS
  Mean adherence was 86.4%. It was 91.6% for the subgroup of patients who reported not taking planned medication breaks (n = 252) and 77.7% for the subgroup taking planned medication breaks (n = 155). Overall, 75% of patients showed high adherence. Older age, low starting dose, minority ethnic status, and fewer ADHD symptoms were associated with low adherence.
  
  
  CONCLUSIONS
  Various factors were found to be associated with low adherence, and the results of this analysis provide guidance to physicians seeking to identify those patients with ADHD most likely not be adherent to stimulant therapy
authors.affiliation: Department of Psychiatry and Behavioral Sciences, SUNY Upstate Medical University, Syracuse, NY 13210, USA. faraones@upstate.edu
authors.forename: Stephen V
authors.initials: SV
authors.lastname: Faraone
authors.forename: Joseph
authors.initials: J
authors.lastname: Biederman
authors.forename: Brenda
authors.initials: B
authors.lastname: Zimmerman
mesh_terms: D000293:Adolescent; D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy* / Q000453:epidemiology; D000697:Central Nervous System Stimulants / Q000009:adverse effects / Q000627:therapeutic use*; D002648:Child; D003692:Delayed-Action Preparations; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008297:Male; D008774:Methylphenidate / Q000008:administration & dosage* / Q000009:adverse effects; D010349:Patient Compliance / Q000706:statistics & numerical data*; D012307:Risk Factors; D016312:Treatment Refusal / Q000706:statistics & numerical data
chemical_list: D000697:Central Nervous System Stimulants; D003692:Delayed-Action Preparations; D008774:Methylphenidate