Factor analysis of abbreviated versions of the WHOQoL-Old in Chilean older people

The increase in elderly population demands the need for new health measures that are reliable and valid. 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. We performed confirmatory factor analysis on data collected from 804 older people, aged 70 ± 6 years (66% females). 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. The abbreviated version tested is a valid and reliable questionnaire to be used in Chilean older people.