Gastroenterology Research and Practice

Research Article

Impact of a Novel Oblique-Tip Papillotome for Biliary Cannulation during ERCP: A Nonrandomized Coarsened Exact Matching Study

Table 1

Patient characteristics in the unmatched cohort.


	OT-CGC	OT-WGC	ST-WGC

Number of patients	80	80	80
Age	^1,4
Sex (male/female)	48/32	36/44	37/43
Underlying disease (benign/malignant)	47/33^2,5	69/11	65/15
Choledocolithiasis	41	57	51
Other benign disease	6	12	14
Pancreatic cancer	10	3	7
Biliary cancer	14	6	8
Other malignancy	9	2	0
Diverticulum (-/+)	70/10	76/4	77/3
Endoscopic procedure (ERC/EBD/EST)	15/53/12	1/20/59³	18/27/35

ERC: endoscopic retrograde cholangiography; EBD: endoscopic biliary drainage; EST: endoscopic sphincterotomy. ¹ (OT-CGC vs. ST-WGC), ² (OT-CGC vs. ST-WGC), ³ (OT-WGC vs. ST-WGC), ⁴ (OT-CGC vs. OT-WGC), and ⁵ (OT-CGC vs. OT-WGC).