Fig. 2From: Aggregate index of systemic inflammation (AISI) in admission as a reliable predictor of mortality in COPD patients with COVID-19Kaplan–Meier survival curves during hospitalization of COPD patients with different cut-off values of the systemic inflammation indexes investigated. (A): MLR and (B): AISI. AISI: aggregate index of systemic inflammation, MLR: monocyte/lymphocyte ratioBack to article page