title: The relationship between elderly suicide rates and elderly dependency ratios: a cross-national study using data from the WHO data bank.
abstract: BACKGROUND
  Cultural factors may influence cross-national variations in elderly suicide rates.
  
  
  METHODS
  A cross-national study examining the relationship between elderly suicide rates and elderly dependency ratios was conducted with the a priori unidirectional hypothesis that lower elderly dependency ratios (ratio of people over the age of 65 years to people under the age of 65 years) may imply a greater number of younger people being potentially available to provide support and respect to the elderly and to hold them in high esteem, and this would lead to a reduction in elderly suicide rates. Data on elderly suicide rates, and the total number of elderly and young people were ascertained from the World Health Organization website.
  
  
  RESULTS
  Significant positive correlations were found between the natural logarithm of suicide rates, in both sexes in two elderly age-bands (65-74 years and 75+ years), and the elderly dependency ratio for males, females and both sexes combined.
  
  
  CONCLUSIONS
  The impact of elderly dependency ratios on elderly suicide rates may interact with and be modified and mediated through cultural factors. The contribution of cross-national differences in cultural factors on elderly suicide rates require further study by formally measuring cultural factors with validated instruments.
authors.affiliation: Ageing, Ethnicity and Mental Health, University of Central Lancashire, Preston, U.K. and West London Mental Health NHS Trust, London, U.K. ajit.shah@wlmht.nhs.uk
authors.forename: Ajit
authors.initials: A
authors.lastname: Shah
authors.forename: Mellisha
authors.initials: M
authors.lastname: Padayatchi
authors.forename: Kavita
authors.initials: K
authors.lastname: Das
mesh_terms: D000368:Aged; D003430:Cross-Sectional Studies; D003469:Culture; D003858:Dependency, Psychological; D005260:Female; D006801:Humans; D008297:Male; D012944:Social Support; D013405:Suicide / Q000523:psychology* / Q000706:statistics & numerical data*; D006113:United Kingdom / Q000453:epidemiology; D014944:World Health Organization