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Age Ageing. 1999 Mar;28(2):169-74.

Validity and reliability of the Medical Outcomes Study Short Form-20 questionnaire as a measure of quality of life in elderly people living at home.

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1
Division of Geriatric Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.

Abstract

BACKGROUND:

the Medical Outcomes Study Short Form-20 (SF-20) questionnaire is recommended for health-related quality of life research, but there is little information on its utility in older people. We assessed the validity, reliability and feasibility of using the SF-20 in an elderly community-dwelling population.

METHODS:

the SF-20 was administered to a stratified, random sample of 333 elderly subjects.

FINDINGS:

assessment of content validity revealed that important domains were lacking, while others appeared to be inappropriately combined. Using Spearman correlation coefficients, the SF-20 had acceptable convergent and discriminant validity. A principal components analysis provided evidence for internal consistency for some of the subscales. Evidence for test-retest reliability was good.

INTERPRETATION:

while the reliability and feasibility of the SF-20 appear satisfactory, concerns about validity and responsiveness should temper enthusiasm for its use with elderly people living at home.

PMID:
10350414
[Indexed for MEDLINE]
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