Table 1.

Demographic characteristics of cases with acute pancreatitis and controls in Taiwan during the period of 1998-2011.

	Controls N = 8373		Cases N = 3501
Variable	n	(%)	n	(%)	P value*
Sex					0.99
Female	2679	(32.0)	1120	(32.0)
Male	5694	(68.0)	2381	(68.0)
Age group (years)					0.07
20-39	2979	(35.6)	1203	(34.4)
40-64	3820	(45.6)	1578	(45.1)
65-84	1574	(18.8)	720	(20.6)
Age (years), mean (standard deviation)†	48.6	(15.8)	49.2	(16.0)	0.03
Fluvastatin					0.39
No use	8328	(99.46)	3475	(99.25)
Current use	41	(0.49)	23	(0.66)
Late use	4	(0.05)	3	(0.09)
Comorbidities before index date
Alcohol-related diseases	1148	(13.7)	545	(15.6)	0.008
Biliary stone	715	(8.54)	406	(116)	< 0.001
Cardiovascular diseases	1417	(16.9)	666	(19.0)	0.006
Chronic kidney disease	115	(1.37)	100	(2.86)	< 0.001
Chronic obstructive pulmonary disease	1123	(13.4)	519	(14.8)	0.04
Diabetes mellitus	623	(7.44)	365	(10.4)	< 0.001
Hepatitis B	185	(2.21)	146	(4.17)	< 0.001
Hepatitis C	79	(0.94)	93	(2.66)	< 0.001
Hyperparathyroidism&	1	(0.01)	9	(0.26)	<0.001
Hypertriglyceridemia	658	(7.86)	336	(9.60)	0.002

Data are presented as the number of subjects in each group with percentages given in parentheses, or mean with standard deviation given in parentheses.

^*Chi-square test,

^&Fisher exact test, and

^† t test comparing subjects with and without acute pancreatitis.