Number of Endoscopic Retrograde Cholangiopancreatography Procedures Required for Short Biliary Cannulation Time

Table 1

Clinical characteristics of the patients, applied cannulation method, and PEP incidence.

	Group L ()	Group S ()	Two-tailed value	Odds ratio	95% CI
Mean age (SD), years	69.3 (13.3)	70.1 (14.5)	0.533^a	—	−3.4337–1.7785
Sex (male), n	94	211	0.798^b	0.953	0.658–1.380
Cannulation method, n	Injection 86	Injection 342	0.000^b	—	—
	WGC 18	WGC 12
	PGW 40	PGW 10
	Precut 22	Precut 1
PEP, n (%)	26 (15.6)	7 (1.9)	0.000^b	9.498	4.031–22.381

CI: confidence interval; SD: standard deviations; WGC: wire-guided cannulation; PGW: pancreatic guidewire method; Precut: percutaneous; PEP: post-ERCP pancreatitis; ^aStudent’s t-test; ^bChi-square test.