Development and Construct Validation of the Korean Competence Scale (KCS)
CHANG-WAN HAN,1,2 YUKI YAJIMA,3 EUN-JOO LEE,4 CHUN-MAN PARK,5 MAKIKO MEGURO,6 KAZUO NAKAJIMA7 and MASAHIRO KOHZUKI1
1Department of Internal Medicine and Rehabilitation Science, Tohoku University Graduate School of Medicine, Sendai 980-8574,
2School of Health and Welfare, Woosong University, Deajoen, Korea,
3Social and Environmental Sciences, Graduate School of Medicine and Dentistry, Okayama University, Okayama 700-8530,
4Division of Neuropsychology, Department of Disability Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574,
5Department of Public Health, Graduate School of Natural Science, Keimyung University, Korea,
6Division of Physiological Medicine, St. George’s Hospital Medical School, Cranmer Terrance, London, UK, and
7Department of Welfare System and Health Science (Health and Welfare Science), Okayama Prefectural University, Soja 719-1197
A comprehensive Korean competence scale (KCS) designed for Korean older adults, was developed and its construct validity evaluated. KCS assesses their higher levels of functional competence than activities of daily livings (ADL), necessary for independence in the home and community. The internal structure of the scale was tested using an exploratory and confirmatory factor analysis with two elderly Korean sample groups. As expected, the exploratory factor analysis result demonstrated a three-factor solution comprised of the following three domains: instrumental self-maintenance, intellectual activity, and social role. The confirmatory factor analysis results showed that an acceptable solution could be estimated for a second-order factor model comprised of these factors. These findings provide evidence for the construct validity of the instrument and have implications for future research on factorial invariance.
keywords —— Korean competence scale; construct validity; factor analysis; older community resident
© 2004 Tohoku University Medical Press
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Tohoku J. Exp. Med., 2004, 203, 331-337
Address for reprints: Masahiro Kohzuki, M.D., Ph.D., Department of Internal Medicine and Rehabilitation Science, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aoba-ku, Sendai 980-8574, Japan.
e-mail: kohzuki@mail.tains.tohoku.ac.jp