Fig. 1From: The clinical frailty scale, but not the FRAIL checklist is associated with mortality in old critically ill patients with COVID-19Frail patients defined by both CFS > 4 (HR 2.01 95% CI 1.50–2.69; p < 0.001; A and FRAIL > 0 (HR 1.46; 95% CI 1.04–2.03; p = 0.03; B evidenced worse outcomesBack to article page