Table 4. Univariate and multivariate conditional logistic regression for estimating acute pancreatitis risks in case-control substudy.

	Univariate model		Multivariate model
Risk factors	Odds ratio [95% CI]	P value	Odds ratio [95% CI]a	P value
Type 2 diabetes mellitus	1.72 [1.46, 2.04]	<0.001	1.86 [1.51, 2.29]	<0.001
Dyslipidemia	0.73 [0.60, 0.89]	0.002	0.62 [0.48, 0.79]	<0.001
Alcoholism	8.00 [2.73, 23.41]	<0.001	13.40 [4.27, 42.04]	<0.001
Gallstones	15.07 [12.36, 18.36]	<0.001	14.29 [11.60, 17.62]	<0.001
Biliary obstruction	25.81 [16.48, 40.42]	<0.001	19.23 [11.55, 32.04]	<0.001
Other pancreatic diseases excluding pancreatitis	2.42 [1.54, 3.79]	<0.001	1.99 [1.13, 3.51]	0.017
Surgeries for digestive system diseases	1.80 [1.51, 2.15]	<0.001	1.02 [0.81, 1.28]	0.882

Cases and controls were matched for hospital visit timing, gender, birth year, and geographic location.

^aOdds ratios were adjusted for all comorbidities in the table.