title: Factors associated with continued adherence to influenza vaccination in the elderly.
abstract: OBJECTIVE
  We aimed to analyze the factors influencing continued adherence to influenza vaccination in elderly persons vaccinated in the preceding season.
  
  
  METHODS
  Using a population-based vaccination registry, we evaluated the proportion of persons vaccinated against influenza in Navarre, Spain, in the 2010-11 season among non-institutionalized persons aged 65 years or over who had been vaccinated in the 2009-10 season. Logistic regression was used to analyze the influence of sociodemographic, clinical and health care factors.
  
  
  RESULTS
  Of the 64,245 persons vaccinated against influenza in the 2009-10 season, 87% were vaccinated in the 2010-11 season. Continued adherence to vaccination increased with the number of physician visits per year. It was lower in women, in the 65-69 and ≥ 95 year age-groups, in those hospitalized or diagnosed with any major chronic condition in the previous year, and in persons with hematological cancer or dementia. Health districts and physicians with higher coverage in the previous season continued to have higher adherence in the following season.
  
  
  CONCLUSIONS
  People vaccinated against influenza in one season tend to be vaccinated in the following one. Sociodemographic, clinical and health care factors have a moderate effect on the continuity of vaccination, with the most important factor being the treating physician.
authors: Instituto de Salud Pública de Navarra, Pamplona, Spain.
authors: Iván
authors: I
authors: Martínez-Baz
authors: Isabel
authors: I
authors: Aguilar
authors: Julio
authors: J
authors: Morán
authors: Esther
authors: E
authors: Albéniz
authors: Pablo
authors: P
authors: Aldaz
authors: Jesús
authors: J
authors: Castilla
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D007114:Immunization / Q000706:statistics & numerical data*; D007252:Influenza Vaccines / Q000627:therapeutic use*; D007251:Influenza, Human / Q000517:prevention & control*; D016015:Logistic Models; D008297:Male; D016017:Odds Ratio; D010349:Patient Compliance / Q000706:statistics & numerical data*; D011320:Primary Health Care; D012042:Registries; D013030:Spain
chemical_list: D007252:Influenza Vaccines