Table IV.

Logistic regression analysis assessing the relationship between post-ERCP pancreatitis and cannulation times in patients stratified by previous post-ERCP pancreatitis or acute pancreatitis

				Post-ERCP pancreatitis (Outcome variable†)
		No. of patients	No. of PEP (%)	Univariate OR (95% CI)	Multivariate OR (95% CI)*
Previous post-ERCP pancreatitis (+)		81
Cannulation time	< 15 min	54	19 (35.2%)	1 (reference)	1 (reference)
	≥ 15 min	27	17 (63.0%)	3.13 (1.22–8.42)	2.97(1.10–8.43)
	P value			0.02	0.03
Previous acute pancreatitis (+)		52
Cannulation time	< 15 min	44	15 (34.1%)	1 (reference)	1 (reference)
	≥ 15 min	8	2 (25%)	1.55 (0.31–11.5)	2.78 (0.50–22.42)
	P value			0.61	0.25
Previous pancreatitis (−)		1201
Cannulation time	< 15 min	894	36 (4.0%)	1 (reference)	1 (reference)
	≥ 15 min	307	26 (8.5%)	2.21 (1.30–3.70)	2.43 (1.41–4.14)
	P value			0.004	0.002

^†0(absent); 1+ (present).

^*The odds ratio was adjusted for age, sex, suspected SOD, pancreatic duct injection, EST, precut sphincterotomy, pancreatic duct IDUS, bile duct IDUS, pancreatic duct aspiration cytology, bile duct aspiration cytology, pancreatic duct brush cytology, bile duct brush cytology, and EPS. Backward stepwise elimination with a threshold of P = 0.05 was used to select variables for the final models.

EPS: endoscopic pancreatic stenting; ERCP: endoscopic retrograde cholangiopancreatography; EST: endoscopic sphincterotomy; IDUS: intraductal ultrasonography; SOD: sphincter of Oddi dysfunction. CI, confidence interval; OR, odds ratio.