title: The independent effect of chronic diseases, sociodemographic and behavioral factors related to disability in older people living in Ribeirão Preto, SP, 2007 - The EPIDCV Project.
abstract: OBJECTIVE
  To investigate the prevalence and correlates of functional disability in elderly people living in Ribeirão Preto, SP.
  
  
  METHODS
  This is a cross-sectional population-based epidemiological study with multistage sampling. Design effect was corrected using a weighted sample composed by 536 elderly people. Disability based on daily living activities dependence (outcome) was assessed by using a validated questionnaire for population-based epidemiological studies. Points and 95% confidence intervals estimated crude and stratified prevalence rates of the outcome according to sociodemographic, behavioral, health-related, and self-reported morbidity variables. To identify the correlates, the crude and adjusted prevalence ratios were estimated using Poisson regression.
  
  
  RESULTS
  The crude prevalence of disability was 50.31%. In the multivariate models, after simultaneous intra-group adjustment (final models), the following variables remained independently associated with the outcome: sociodemographic (age, education, and contribution to familiar income); behavioral (daily mean of sitting time); health-related factors (hypertension, ischemic heart disease, medicines taken, and low cognitive performance); and self-reported morbidity (number of diseases and low hearing performance).
  
  
  CONCLUSIONS
  The high prevalence of disability among elderly people in Ribeirão Preto and the presence of modifiable variables impose the need for specific health promotion and prevention measures, aiming a better quality of life for this population group, which is already well represented in the city's most recent population pyramids.
authors.affiliation: Departamento de Enfermagem Materno-Infantil e Saúde Pública, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Suzana Alves
authors.initials: SA
authors.lastname: de Moraes
authors.affiliation: Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Daniele Almeida
authors.initials: DA
authors.lastname: Lopes
authors.affiliation: Núcleo de Epidemiologia, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Isabel Cristina Martins
authors.initials: IC
authors.lastname: de Freitas
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D001519:Behavior; D001938:Brazil; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D006801:Humans; D006973:Hypertension / Q000453:epidemiology; D015995:Prevalence; D011788:Quality of Life