title: [Prevalence of non-adherence to medication among patients treated for selected chronic conditions].
abstract: The aim of this study was to assess the prevalence of this phenomenon among patients being treated for selected chronic conditions.
  
  
  METHODS
  As many as 63,221 patients treated for hypertension, gastroesophageal reflux disease, Alzheimer disease, depression, schizophrenia, and memory loss were enrolled to this multicenter, questionnaire-based open study The primary outcome measure was patient adherence assessed with 4-item Morisky questionnaire. Only those respondents who gave negative answers to all questionnaire questions were assumed adherent.
  
  
  RESULTS
  Out of respondents, 83.8%--in different ways--were nonadherent, and only 16.2% were adherent. Significant differences in adherence were observed with different diseases (p < 0.05), asymptomatic versus symptomatic nature of disease (asymptomatic diseases--81.5%, versus symptomatic diseases--84.7%, in average, p < 0.05), as well as psychiatric, versus organic disease type (nonadherence in 85.6, and 82.1% patients, p < 0.05).
  
  
  CONCLUSIONS
  Study proved very high prevalence of non-adherence in patient treated for chronic conditions. Patients are non-adherent particularly often in a case of psychiatric conditions.
authors.affiliation: Uniwersytet Medyczny w Łodzi, I Zakład Medycyny Rodzinnej. przemyslaw.kardas@umed.lodz.pl
authors.forename: Przemysław
authors.initials: P
authors.lastname: Kardas
mesh_terms: D000328:Adult; D000544:Alzheimer Disease / Q000188:drug therapy*; D002908:Chronic Disease; D005260:Female; D005764:Gastroesophageal Reflux / Q000188:drug therapy*; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D008297:Male; D008569:Memory Disorders / Q000188:drug therapy*; D001523:Mental Disorders / Q000188:drug therapy*; D010349:Patient Compliance / Q000706:statistics & numerical data*; D011044:Poland / Q000453:epidemiology; D011159:Population Surveillance; D015995:Prevalence; D012559:Schizophrenia / Q000188:drug therapy*; D011795:Surveys and Questionnaires