Fig. 2

ROC curves of POSSUM physiological score, Acute Calcolous Cholecystitis (ACC) severity grade (according to the 2018 Tokyo Guidelines), Charlson Comorbidity index, ASA-PS, Chole-risk, modified Frailty Index, APACHE II for in-hospital mortality (a), 30-day mortality (b), in-hospital major morbidity (c), 30-day major morbidity (d) in patients with ACC after EC