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Assessing competence at a higher level among older adults: development of the Japan Science and Technology Agency Index of Competence (JST-IC).

Abstract：

BACKGROUND AND AIMS:Older adults' ever-improving health and changing lifestyles necessitate the development of a scale that can better measure their competence at a higher level. We developed the Japan Science and Technology Agency Index of Competence (JST-IC) via item analysis and assessed its psychometric properties. METHODS:Participants were 1306 community-dwelling older adults (623 men and 683 women, 74.0 ± 2.8 years old) who completed the 54-item draft JST-IC to determine their level of independence. Three procedures (including item selection, factor analyses, and reliability and validity analyses) were conducted to finalize the JST-IC and evaluate its psychometric properties. RESULTS:The item selection resulted in exclusion of 26 items for the following reasons: (a) 15 because of very high ratios (80% or more) of responders who answered "yes", (b) one because of gender differences (phi coefficient = 0.34), (c) five because of their weak association with the Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC) (Pearson correlation coefficient of 0.30 or smaller), and (d) five because of redundancy of meaning with other items. Through factor analyses, we selected 16 items with a four-factor solution for the final version. JST-IC score exhibited a near-normal distribution and significant gender and age differences, and had moderate correlations with size of social network and level of subjective well-being and strong correlations with TMIG-IC score, physical fitness, and health literacy. CONCLUSIONS:The JST-IC is useful for assessing competence at a higher level in community-dwelling older adults.

journal_name

Aging Clin Exp Res

journal_title

Aging clinical and experimental research

authors

Iwasa H,Masui Y,Inagaki H,Yoshida Y,Shimada H,Otsuka R,Kikuchi K,Nonaka K,Yoshida H,Yoshida H,Suzuki T

doi

10.1007/s40520-017-0786-8

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

383-393

issue

eissn

1594-0667

issn

1720-8319

pii

10.1007/s40520-017-0786-8

journal_volume

pub_type

杂志文章

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Assessing competence at a higher level among older adults: development of the Japan Science and Technology Agency Index of Competence (JST-IC).