Different approaches of SARC‐tools for Sarcopenia Screening in chronic obstructive pulmonary disease: a cross‐sectional validation study

BACKGROUND: We aimed to assess the concurrent and predictive validity of different screening tools for sarcopenia in outpatients with chronic obstructive pulmonary disease. METHODS: were applied; sarcopenia was diagnosed and considered as reference to test the concurrent validity. The outcomes evaluated to test the predictive validity included dyspnea severity, stage of disease, quality of life, the 6-min walk test, and the prognosis index. RESULTS: were 3.37 times (95% CI 1.18; 9.63) more likely to walk less than 350 m, 5.31 times (95% CI 2.01; 14.04) more likely to have poorer prognosis, 4.05 times (95% CI 1.55; 10.61) more likely to experience greater shortness of breath, and 6.4 times (95% CI 1.94; 21.13) more likely to have diminished quality of life. Risk of sarcopenia identified by SARC-F (advanced stage of disease, poor prognosis and quality of life) and SARC-Calf (advanced stage of disease, poor prognosis, and reduced functional capacity) was associated with a lower number of outcomes. CONCLUSIONS: for these patients.