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Screening Sarcopenia in Rural Community-Dwelling Older Adults in Korea

  • KIM, Mi-Kyoung (Graduate College of Nursing, Gyeongsang National University) ;
  • LEE, Ji-Yeon (Graduate College of Nursing, Gyeongsang National University) ;
  • GIL, Cho-Rong (Graduate College of Nursing, Gyeongsang National University) ;
  • KIM, Bo-Ram (Graduate College of Nursing, Gyeongsang National University) ;
  • CHANG, Hee-Kyung (College of Nursing, Gerontological Health Research Center in Institute of Health Sciences, Gyeongsang National University)
  • Received : 2020.10.04
  • Accepted : 2020.10.30
  • Published : 2020.12.31

Abstract

Purpose: Several screening tools have been developed to identify sarcopenia in rural community-dwelling older adults. We aimed to compare the diagnostic accuracy of two such tools, namely the SARC-F and SARC-CalF assessments. Methods: This cross-sectional study on 388 community-dwelling older adults comprised 254 women and 134 men with a mean age of 77.8 ± 6.26 year in Korea. We assessed muscle mass, muscle strength, and physical performance using a bioimpedance analysis device, hydraulic hand dynamometer, and 4 m gait speed test, respectively. Three widely-used diagnostic criteria [the Asian Working Group for Sarcopenia (AWGS), European Working Group on Sarcopenia in Older People, and the International Working Group on Sarcopenia] were applied. Sensitivity and specificity analyses were performed on the SARC-CalF and SARC-F tests. We used receiver-operating characteristic curves and the area under the curves (AUCs) to compare the diagnostic accuracy of the assessments with regard to sarcopenia. Results: An analysis using four sets of diagnostic criteria showed that the prevalence of sarcopenia was 27.6% to 41.0%. Using the AWGS 2019 criteria as a reference standard, the SARC-CalF had a sensitivity of 83.02% and a specificity of 53.71% in the entire study population, whereas the SARC-F had a sensitivity of 79.87% and a specificity of 41.92%. The AUCs for the SARC-CalF and SARC-F tests were 0.725 (95% confidence interval 0.678-0.769) and 0.645 (95% confidence interval 0.595-0.693), respectively (p<001). In the analyses using the other three diagnostic criteria, similarity was also confirmed. Conclusion: SARC-CalF showed better sensitivity than did SARC-F when diagnosing sarcopenia in rural community-dwelling older adults. Further studies are needed to verify this finding in different populations.

Keywords

Acknowledgement

We would like to thank all the participants for the time dedicated to this study.

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