Table 1.

Comparisons in demographic characteristics and comorbidities between patients with and without endoscopic sphincterotomy

	Endoscopic sphincterotomy				Standard difference
	No		Yes
	(n=8174)		(n=8174)
	n	%	n	%
Age, mean (SD)†	68.5	14.6	66.9	15.0	0.11
Gender
Women	3734	45.7	3832	46.9	0.02
Men	4440	54.3	4342	53.1	0.02
Comorbidity
Congestive heart failure	564	6.90	491	6.01	0.04
Biliary stone	5695	69.7	5319	65.1	0.10
Cancer	687	8.40	580	7.10	0.06
Hypertension	3556	43.5	3186	39.0	0.09
Chronic obstructive lung disease	855	10.5	714	8.74	0.06
Hyperlipidaemia	1052	12.9	792	9.69	0.10
Alcoholic liver damage	296	3.62	191	2.34	0.08
Cirrhosis	561	6.86	455	5.57	0.05
Cholangitis	793	9.70	1264	15.5	0.18
Cholecystitis	663	8.11	602	7.36	0.03
Pancreatic diseases	1544	18.9	1407	17.2	0.04
Chronic kidney disease	795	9.73	657	8.04	0.06
Appendicitis	167	2.04	152	1.86	0.01
Inflammatory bowel disease	34	0.42	20	0.24	0.03
Diverticulosis	215	2.63	206	2.52	0.01