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Table 2 Comorbidities of patients were graded by the American Society for Anesthesia (ASA) Classification

From: Endoscopic papillary large balloon dilation alone without sphincterotomy for the treatment of large common bile duct stones

ASA Classification Medical description of patients No. of patients (%)
I No known systemic disease 115 (46.6)
II Mild or well controlled systemic disease (s) 43 (17.4)
III Multiple or moderately controlled systemic disease (s) 63 (25.5)
IV Poorly controlled systemic disease (s) 26 (10.5)