Advertisement

Osteoporosis International

, Volume 12, Issue 8, pp 672–679 | Cite as

Postal Administration Compared with Nurse-Supported Administration of the QUALEFFO-41 in a Population Sample: Comparison of Results and Assessment of Psychometric Properties

  • P. Murrell
  • C. J. Todd
  • A. Martin
  • J. Walton
  • P. Lips
  • J. Reeve
  • (on behalf of the Working Party for Quality of Life of the International Osteoporosis Foundation)
Original Article

Abstract.

The objective of this study was to test the psychometric properties of the QUALEFFO-41, an osteoporosis-specific health-related quality of life (HRQoL) measure, in a population sample. The study involved repeated administration of QUALEFFO-41 and another measure of HRQoL, the SF-36, to a stratified random population sample to test reliability and validity of instrument. The study was set in urban Harrow, Middlesex, UK and rural Cambridgeshire, UK. The participants were 83 males and 88 females aged 65–80+ years. Of the 230 individuals contacted 76.5% participated. The test–retest reliability of most QUALEFFO-41 items was good (Kappa 0.59–0.91) but two items had lower repeatability. Internal consistency was also generally good, but suggestive of some redundancy for three domains. The QUALEFFO-41 domains in general correlated well with SF-36 domains (r= 0.57 to r= 0.87), suggesting good validity. The QUALEFFO-41 has been shown to be a reliable and valid disease-specific HRQoL measure for osteoporosis. In population samples, it can be administered by post, or with a professional available to answer queries. Some specific items perform less well than may be desired and there is evidence of some redundancy, but further investigation is required and there are not yet grounds for textual change. We recommend continued use of this well-validated, reliable instrument.

Key words: Disease-specific questionnaire – Osteoporosis – QUALEFFO-41 – Quality of Life – SF-36 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2001

Authors and Affiliations

  • P. Murrell
    • 1
  • C. J. Todd
    • 1
  • A. Martin
    • 1
  • J. Walton
    • 1
  • P. Lips
    • 2
  • J. Reeve
    • 3
  • (on behalf of the Working Party for Quality of Life of the International Osteoporosis Foundation)
  1. 1.Department of Public Health and Primary Care, Institute of Public Health, University of Cambridge, UKGB
  2. 2.Department of Endocrinology, Vrije Universiteit, Amsterdam, The NetherlandsNL
  3. 3.Department of Medicine and Institute of Public Health, University of Cambridge, UKGB

Personalised recommendations