title: [Factor analysis of abbreviated versions of the WHOQoL-Old in Chilean older people].
abstract: BACKGROUND
  The increase in elderly population demands the need for new health measures that are reliable and valid.
  
  
  OBJECTIVE
  To compare the factor structure of the Quality of Life Scale WHOQoL-Old of the World Health Organization with the three proposed abbreviated versions of the scale.
  
  
  METHODS
  We performed confirmatory factor analysis on data collected from 804 older people, aged 70 ± 6 years (66% females).
  
  
  RESULTS
  One of the unifactorial models that incorporate six questions had goodness of fit values greater than 0.95 in the non-normed fit index and below .05 in the root-mean square error of approximation.
  
  
  CONCLUSIONS
  The abbreviated version tested is a valid and reliable questionnaire to be used in Chilean older people.
authors.affiliation: Línea de Investigación Salud y Calidad de Vida, Escuela de Psicología, Universidad Católica del Norte, Antofagasta, Chile. alurzua@ucn.cl
authors.forename: Alfonso
authors.initials: A
authors.lastname: Urzúa M
authors.forename: Mauricio
authors.initials: M
authors.lastname: Navarrete
mesh_terms: D000368:Aged; D002677:Chile; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards*; D014944:World Health Organization