노인 대상의 한국어판 기본신체능력 측정도구의 타당도와 신뢰도 검증

Abstract

Purpose: This study aimed to verify the validity and reliability of the Korean version of the Basic Physical CapabilityScale (BPCS-K). Methods: The BPCS was translated into Korean using forward and back translations. Data werecollected from January 16 to May 10, 2019. The study participants comprised 285 older adults, with 147 recruitedfrom an acute care setting, and 138, who had dementia, were from long-term care facilities. Data analysis includedKR-20, intraclass correlation coefficient, independent t-test, Kruskal-Wallis H test, hierarchical multiple regression,and Rasch analysis (item difficulty, infit/outfit, separation index, reliability index, and differential item functionanalysis), and were conducted using SPSS/WIN 25.0 and R programs. The criterion-related validity was examinedusing the Barthel Index. Results: The KR-20 reliability coefficient was .93 and the intraclass correlation coefficientfor 2-week test-retest reliability was .97. The BPCS-K scores were significantly different compared to the knowngroups. Moreover, controlling for age, gender, and cognitive status, the Barthel Index score was significantlyassociated with the BPCS-K scores. Rasch analysis supported good construct validity. Conclusion: The findingssuggest that the 16-item BPCS-K is an appropriate instrument to measure basic physical capability in Korean olderadults. The BPCS-K can establish individualized physical activity goals for the elderly in a variety of clinical settingsand can also serve to measure changes of physical function in physical activity interventions for older adults.