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Kaplan–Meier plots and contour plot of survival probability in hospitalized patients with severe COVID-19. (A) Mortality was significantly higher in patients with CK-MB > 2.2 ng/mL, MYO > 73 μg/L, and cTnI > 0.026 ng/mL, all P <0.001 by log-rank test. (B) Higher initial levels of CK-MB, MYO, and cTnI were consistently associated with higher mortality, which was pronounced in patients with senior age. CK-MB, creatinine kinase-myocardial band; MYO, myoglobin; cTnI, cardiac troponin I.
