gms | German Medical Science

14. Deutscher Kongress für Versorgungsforschung

Deutsches Netzwerk Versorgungsforschung e. V.

7. - 9. Oktober 2015, Berlin

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The WHOQOL-OLD – Measurement characteristics in the German population 60+ depending on the cognitive status

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  • Ines Conrad - Universität Leipzig, Institut für Sozialmedizin, Arbeitsmedizin und Public Health (ISAP), Leipzig, Deutschland
  • Herbert Matschinger - Universität Leipzig, Institut für Sozialmedizin, Arbeitsmedizin und Public Health (ISAP), Leipzig, Deutschland
  • Reinhold Kilian - Universität Ulm, Pychiatrie und Psychotherapie II, Günzburg, Deutschland
  • Steffi G. Riedel-Heller - Universität Leipzig, Institut für Sozialmedizin, Arbeitsmedizin und Public Health (ISAP), Leipzig, Deutschland

14. Deutscher Kongress für Versorgungsforschung. Berlin, 07.-09.10.2015. Düsseldorf: German Medical Science GMS Publishing House; 2015. DocP021

doi: 10.3205/15dkvf190, urn:nbn:de:0183-15dkvf1905

Published: September 22, 2015

© 2015 Conrad et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.

Outline

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Background: The WHOQOL-OLD – an intercultural comparable WHO instrument for measuring subjective quality of life (qol) – is a 24-item 6-facet add-on module which can be used with the WHOQOL-BREF or the WHOQOL-100 for assessment of qol in older adults. A great number of research centres from different cultures (WHOQOL-OLD group) developed this questionnaire under the sponsorship of the WHO. The WHOQOL-OLD applies to healthy people as well as to patients with somatic or psychiatric diseases, 60 years and older.

Objective: The aim of the study was to investigate the measurement characteristics of the WHOQOL-OLD in the German population of older people depending on the cognitive status (no cognitive impairment vs. mild cognitive impairment (MCI)) as well as on other individual characteristics. The main question was: Does MCI have an effect on the assessment of subjective qol?

Methods: In a survey on 1.000 German older adults (60+ yrs.), the WHOQOL-OLD was assessed. Participants were also investigated with a measure on cognitive status (DemTect). In order to asses both the dimensionality of the instrument and the sensitivity of the prescriptive forms of answering to individual characteristics Partial Credit Models as well as Mixture General Diagnostic Models are employed. Uniform and non-uniform differential item functioning is explored by means of explanatory IRT models. The impact of the cognitive status on QoL, as well as its effect as a source of DIF in the general population is investigated.

Results: Results of the analyses will be presented.