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  • Title: Self-reported disability and its association with performance-based limitation in elderly men: a comparison of three European countries.
    Author: van den Brink CL, Tijhuis M, Kalmijn S, Klazinga NS, Nissinen A, Giampaoli S, Kivinen P, Kromhout D, van den Bos GA.
    Journal: J Am Geriatr Soc; 2003 Jun; 51(6):782-8. PubMed ID: 12757564.
    Abstract:
    OBJECTIVES: To compare self-reported disability and performance-based limitation and their association in elderly men from three European countries. DESIGN: Cross-sectional data from a cohort study collected around 1990. SETTING: Three cohorts from Finland, the Netherlands, and Italy. PARTICIPANTS: One thousand one hundred sixty-one men aged 70 and older. MEASUREMENTS: Disability and functional limitation were measured in a standardized way in three countries. Self-reported disability was estimated by questionnaire, assessing three domains of activities of daily living: instrumental activities of daily living, mobility, and activities of daily living (score 0-3). Functional limitation was measured by performance tests (score 0-16), with 0 indicated the healthiest score. RESULTS: Self-reported disability and performance-based limitation scores differed between countries. Mean self-reported disability score was worse in Italy (0.72) and the Netherlands (0.70) than in Finland (0.54). Italian men scored worst on the performance-based tests (mean 4.80 vs 4.04 for Finland and 3.74 for the Netherlands). Differences in self-reported disability remained after adjusting for performance scores: Dutch men reported more disabilities (odds ratio (OR) = 1.66, 95% confidence interval (CI) = 1.23-2.25) than men in Finland (reference group) and Italy (OR = 1.08, 95% CI = 0.77-1.53). Self-reported disability was positively associated with performance-based score (OR = 1.28, 95% CI = 1.21-1.35) and did not differ between countries. CONCLUSION: Cross-cultural variation was noted in self-reported disability adjusted for performance score. These differences may be due to sociocultural and physical environmental factors. Self-reported disability was consistently associated with performance-based limitation in Finland, the Netherlands, and Italy.
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