Expanding the frontiers of ageing research

Deeg, D.J.H.; Wahl, Hans‐Werner

doi:10.1007/s10433-006-0023-3

Cited by 1 publication

(1 citation statement)

References 6 publications

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“…Thus, it can be questioned whether existing QoL measures can be universally regarded as legitimate due to a lack of reliability, validity, responsiveness, precision, interpretability, feasibility, and acceptability of the instruments for the samples under study (Bowling and Ebrahim 2005;Fitzpatrick et al 1998;Streiner andNorman 2003, 2006;Haywood et al 2004Haywood et al , 2005Terwee et al 2007). These issues make it difficult to compare findings across settings and countries, and illustrate the need to test instruments which can be used for comparative cross-cultural research in gerontology (Deeg and Wahl 2006;Terwee et al 2007).…”

Section: Introductionmentioning

confidence: 99%

The suitability of the WHOQOL–BREF for Canadian and Norwegian older adults

2008

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The aim of this study was to examine the validity and reliability of the WHOQOL-BREF, a generic quality of life scale, among older people in Canada and Norway. Very similar data from the Canadian and Norwegian Field Trial data (Canada n = 192; Norway, n = 469) were analyzed and compared. Higher negatively skewed mean scores were found for all WHOQOL-BREF domains in Canada. For both study samples, missing values were highest for the sex item from the social domain. Ceiling effects were found (Canada n = 21; Norway n = 11) primarily among items in the physical and environmental domains. In both study samples, a multitrait multimethod procedure indicated items correlated most strongly with their parent domains; however, equally appreciable correlations were observed between physical, psychological, and environmental items (r = 0.33-0.64; p \ 0.01). The social domain had the lowest internal consistency (a = 0.67 Canada, a = 0.55 Norway). Confirmatory factor analyses (CFA) yielded marginal goodness-of-fit between the hypothesized WHOQOL-BREF measurement model and the sample data as well as differing patterns of domain misspecification. Patterns of correlations (p \ 0.01) of WHOQOL-BREF domains with WHOQOL-OLD facets, a global QOL item, the SF-12, and the geriatric depression scale provided evidence of convergent and divergent validity. Domain scores also significantly discriminated between health and unhealthy populations and presence of morbidity. Empirical support was found, in part, for the construct validity of the WHOQOL-BREF in older adults. Despite some different patterns found in the CFA, possibly due to cultural or sampling differences, it appears that the instrument is reliable, valid, and facilitates cross-cultural comparisons.

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