Fig. 2From: Characteristics, management, and prognosis of elderly patients with COVID-19 admitted in the ICU during the first wave: insights from the COVID-ICU studyKaplan–Meier survival estimates during the 90 days following ICU admission, according to a age (70–74 years, 75–79 years and > 80 years), b Clinical Frailty Scale (1–3; 4; > = 5) and c PaO2/FiO2 ratio at Day-1 of ICU admissionBack to article page