title: Comorbidity of asthma with ADHD.
abstract: OBJECTIVE
  To assess how frequently drugs used to treat asthma and ADHD are prescribed to the same patients.
  
  
  METHODS
  The authors used data from the Norwegian Prescription Database for 2006, including the total Norwegian population (n = 4,640,219).
  
  
  RESULTS
  Anti-asthma drugs were prescribed to 350,894 persons (7.56 % of the population), anti-ADHD drugs to 18,481 persons (0.40 %), and both to 1,730 persons. There was a 65% increased overall risk (OR = 1.65) of being prescribed one of the drugs given a prescription of the other. Women had a markedly higher risk than men. When data for each age group (10 years interval) and each gender were analyzed separately, the strongest associations were found for women between 20 and 49 years of age and men between 30 and 49 years of age.
  
  
  CONCLUSIONS
  These prescription patterns suggested a marked comorbidity between asthma and ADHD.
authors.affiliation: Department of Clinical Medicine, University of Bergen, Norway. ole.fasmer@psyk.uib.no
authors.forename: Ole Bernt
authors.initials: OB
authors.lastname: Fasmer
authors.forename: Trond
authors.initials: T
authors.lastname: Riise
authors.forename: Tomas Mikal
authors.initials: TM
authors.lastname: Eagan
authors.forename: Anders
authors.initials: A
authors.lastname: Lund
authors.forename: Steven C
authors.initials: SC
authors.lastname: Dilsaver
authors.forename: Oivind
authors.initials: O
authors.lastname: Hundal
authors.forename: Ketil J
authors.initials: KJ
authors.lastname: Oedegaard
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D018927:Anti-Asthmatic Agents / Q000627:therapeutic use; D001249:Asthma / Q000188:drug therapy / Q000453:epidemiology*; D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy / Q000453:epidemiology*; D000697:Central Nervous System Stimulants / Q000627:therapeutic use; D002648:Child; D015897:Comorbidity; D016208:Databases, Factual; D011307:Drug Prescriptions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009664:Norway / Q000453:epidemiology; D012307:Risk Factors; D012737:Sex Factors
chemical_list: D018927:Anti-Asthmatic Agents; D000697:Central Nervous System Stimulants