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Randomized Controlled Trial
. 2020;24(10):1120-1127.
doi: 10.1007/s12603-020-1453-x.

Validation of the Danish SARC-F in Hospitalized, Geriatric Medical Patients

J Gade  1 , A M Beck, F Rønholt, H E Andersen, T Munk, A Vinther
Affiliations
Randomized Controlled Trial

Validation of the Danish SARC-F in Hospitalized, Geriatric Medical Patients

J Gade et al. J Nutr Health Aging. 2020.

Abstract

Objectives: Validation of the Danish version of the SARC-F (Strength, Assistance in walking, Rise from a chair, Climb stairs, and Falls) for hospitalized geriatric medical patients, compared against the original EWGSOP (European Working Group on Sarcopenia in Older People) and revised EWGSOP2 definition for sarcopenia. Additionally, investigation of the ability of SARC-F to individually identify low strength/function and muscle mass.

Design: Cross-sectional analysis of data from an RCT.

Setting: Hospital, Medical Department.

Participants: 122 geriatric medical patients (65.6% women) ≥ 70 years of age with mixed medical conditions.

Measurements: SARC-F screening, diagnostic assessment of sarcopenia (hand-grip strength, muscle mass measured by dual-frequency bio-impedance analysis, and 4-m usual gait speed).

Results: The prevalence of risk of sarcopenia (SARC-F ≥ 4) was 48.3%, while it was diagnosed in 65.8% and 21.7%, with EWGSOP and EWGSOP2, respectively. The sensitivity, specificity, positive predictive value, negative predictive value according to EWGSOP were 50.0 %, 53.7 %, 67.2% and 36.1%, while they were 53.8 %, 53.2 %, 24.1% and 80.6%, according to EWGSOP2 (all participants). The ability of SARC-F to predict reduced strength, function, and muscle mass was modest. There was a significant negative linear, yet weak, relationship between total SARC-F score and hand-grip strength (R2=0.033) and 4-m gait speed (R2=0.111), but not muscle mass (R2=0.004).

Conclusion: SARC-F does not seem to be a suitable screening tool for identifying and excluding non-sarcopenic geriatric patients. Furthermore, the SARC-F score was more strongly correlated with reduced muscle strength and physical function than with low muscle mass.

Keywords: Sarcopenia; acutely ill; older adults; physical function; screening.

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Conflict of interest statement

None of the authors declare any conflicts of interests

References

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