title: Prevalence, correlates, and disease patterns of antipsychotic use in Taiwan.
abstract: OBJECTIVE
  The population-based National Health Insurance database was used to investigate the prevalence, correlates, and disease patterns of antipsychotic use in Taiwan.
  
  
  METHODS
  The National Health Research Institutes provided a database of 200,000 random subjects for study. A random sample of 145 304 subjects was obtained, aged > or =18 years in 2004. Study subjects who had been given at least two antipsychotic drug prescriptions during this year were identified. The factors associated with any antipsychotic use were identified. The proportion of antipsychotic use for psychiatric and non-psychiatric disorders was also examined.
  
  
  RESULTS
  The 1-year prevalence of antipsychotic use was 3.5%. Antipsychotic use was found to be more prevalent by age; for women; for individuals with a lower insurance amount; for individuals with disability; and among those subjects who lived in the central or southern area. Among subjects with antipsychotic use, higher proportions of psychiatric disorders were found for schizophrenia, anxiety state, major depressive disorder, neurotic depression, dementia, and bipolar disorder. With respect to medical disorder, higher proportions of antipsychotic use were found for diseases of the digestive system; symptoms, signs, and ill-defined conditions; diseases of the respiratory system, musculoskeletal system and connective tissue, circulatory system, nervous system and sense organs, and genitourinary system.
  
  
  CONCLUSIONS
  Higher proportions of antipsychotic use were found for schizophrenia, depressive disorder, anxiety disorder, dementia, and bipolar disorder. More than 60% of subjects used antipsychotics for non-psychiatric disorders in Taiwan, which deserves further study for the sake of patient safety.
authors.affiliation: Jianan Mental Hospital, Department of Health, Taichung, Taiwan. icchien@mail.cnpc.gov.tw
authors.forename: I-Chia
authors.initials: IC
authors.lastname: Chien
authors.forename: Jer-Hwa
authors.initials: JH
authors.lastname: Hsu
authors.forename: Shin-Huey
authors.initials: SH
authors.lastname: Bih
authors.forename: Ching-Heng
authors.initials: CH
authors.lastname: Lin
authors.forename: Yiing-Jenq
authors.initials: YJ
authors.lastname: Chou
authors.forename: Cheng-Hua
authors.initials: CH
authors.lastname: Lee
authors.forename: Pesus
authors.initials: P
authors.lastname: Chou
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D014150:Antipsychotic Agents / Q000627:therapeutic use*; D016208:Databases, Factual; D006233:Persons with Disabilities; D004363:Drug Utilization; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000188:drug therapy / Q000523:psychology; D008875:Middle Aged; D009313:National Health Programs / Q000706:statistics & numerical data; D011153:Population; D011618:Psychotic Disorders / Q000188:drug therapy* / Q000453:epidemiology*; D013624:Taiwan / Q000453:epidemiology; D055815:Young Adult
chemical_list: D014150:Antipsychotic Agents