title: [Epidemiological analysis of breast cancer mortality in women in Chile].
abstract: BACKGROUND
  Among women, breast cancer is the leading cause of death due to cancer worldwide.
  
  
  OBJECTIVE
  To describe the epidemiology of breast cancer mortality in Chilean women by age, time trend and explore its ecological association with socio-demographic variables.
  
  
  METHODS
  Descriptive study of age specific death rates (2009-2013), and time trend analysis of crude mortality rates (1995-2013) using RiskDiff analysis. Additionally, time trend analysis of age specific death rates was done using Jointpoint regression. The relationship between county mortality risk and socio-demographic variables in the period 2001-2008 was done through an ecological analysis. Socio-demographic variables were: education, income, occupation, housing and living in rural areas.
  
  
  RESULTS
  Breast cancer mortality in Chilean women increases with age, with a sharp increase from 80 years old on. In the 1995-2013 period the increase in the crude death rate was 21.8%, this increment was due to changes in demographic structure (43.4%) and decrease in risk (21.7%). The county relative risk of breast cancer mortality is positively associated with education level and negatively associated with living in rural areas.
  
  
  CONCLUSIONS
  The risk of dying from breast cancer in women has decreased in the period 1995-2013. Nonetheless, the crude death rate has increased in the same period. At an ecological level (counties), breast cancer mortality in Chile is associated with a higher socioeconomic status, measured by educational level and living in rural areas.
authors.affiliation: Instituto de Matemática y Física, Universidad de Talca, Talca, Chile.
authors.forename: Gloria
authors.initials: G
authors.lastname: Icaza
authors.affiliation: Departamento de Salud Pública, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile.
authors.forename: Loreto
authors.initials: L
authors.lastname: Núñez
authors.affiliation: Departamento de Salud Pública, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile.
authors.forename: Herna
authors.initials: H
authors.lastname: Bugueño
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000401:mortality*; D002677:Chile / Q000453:epidemiology; D005260:Female; D006801:Humans; D008875:Middle Aged; D012307:Risk Factors; D055815:Young Adult