Table 1.

Basic information of patients who had ERCP

variable	number
Age
< 50y	45
50~60y	47
61~70y	57
71~80y	44
> 80y	13
Gender
Male	92
Female	114
Context
Suspected or known stone	165
Biliary tract benign stricture	6
Biliary fistula	3
Biliary or pancreatic tumor	31
Intraductal papillary mucinous neoplasm	1
History of pancreatitis (including PEP)	4
Jaundice	112
Priority
Urgent	17
Elective	189
Therapy
EST alone	58
Small EST + EPBD	78
EPBD alone	9
ENBD	140
ERBD	32
Mechanical lithotripsy	12
EMBE	28
ERPD	28