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. 2022 Jul 19;13(5):2436–2446. doi: 10.1002/jcsm.13052

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© 2022 The Authors. Journal of Cachexia, Sarcopenia and Muscle published by John Wiley & Sons Ltd on behalf of Society on Sarcopenia, Cachexia and Wasting Disorders.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Mortality and ICU admission outcomes for patients with COVID‐19 who had decreased muscle area. (A) Cox proportional hazards ratio for mortality and ICU admission patients with COVID‐19 as determined by percentage change in pectoralis major (PM) and erector spinae (ES) muscle area. The cutoff value for PM and ESM areas corresponds to the optimum cutoff determined by a receiver operating characteristic curve based on sensitivity and specificity in this cohort for the standardized rate of muscle loss. The Cox proportional hazard ratio and P‐values for the optimum cutoff are presented. Optimum cutoffs are defined in the corresponding panel using Youden's optimal cutpoint criteria. (B) Receiver operating characteristic curves for per cent change in PM or ESM area.