Endoscopic retrograde cholangiopancreatography, endoscopic papillary balloon dilation, and laparoscopic hepatectomy for intra- and extrahepatic bile duct stones

Table 3 Assignment of potential factors affecting the quality of life of patients with intra- and extrahepatic bile duct stones

Variable	Assignment
X1, gender	Female = 0, male = 1
X2, age (year)	< 65 = 0, ≥ 65 = 1
X3, body mass (kg)	< 55 = 0, ≥ 55 = 1
X4, disease course (year)	< 3 = 0, ≥ 3 = 1
X5, time from onset to operation (day)	< 3 = 0, ≥ 3 = 1
X6, treatment method	ERCP + EPBD + LH = 0, LCBDE plus hepatectomy = 1

ERCP: Endoscopic retrograde cholangiopancreatography; EPBD: Endoscopic papillary balloon dilation; LH: Laparoscopic hepatectomy; LCBDE: Laparoscopic common bile duct exploration.