Aim: To compare the performance of the SARC-F and SARCCalf questionnaires in sarcopenia screening and their relationship with clinical and sociodemographic aspects of older adults.
Methods: Analytical cross-sectional study carried out with 739 elderly people in the community. Clinical, sociodemographic, anthropometric data and screening for signs suggestive of sarcopenia were obtained using the SARC-F and SARCCalf.
Results: Evaluation by method showed a difference in the proportion of positive results for the SARC-F regarding female sex (71.7; p = 0.001), among older adults who did not have a partner (49.7; p < 0.001), and osteoarticular diseases (13.4; p < 0.001). On the other hand, the SARCCalf identified a higher proportion of positive results among older adults at risk of malnutrition (12.2; p < 0.001).
Conclusion: The performance of the instruments varied according to the clinical and sociodemographic characteristics of the population, and it is up to professionals to consider these aspects when using them.
Keywords: Frail elderly; Muscle strength; Physical performance; Primary healthcare; Sarcopenia; Triage.
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