Development and external validation of models to predict acute respiratory distress syndrome related to severe acute pancreatitis

Table 3 Multivariable logistic regression analysis for severe acute pancreatitis and acute respiratory distress syndrome prediction in derivation cohort

Variable	SAP			ARDS
	β	OR (95% CI)	P value	β	OR (95% CI)	P value
Intercept	-6.42	0.00 (0.00-0.05)	< 0.001	-5.46	0.00 (0.00-0.13)	0.002
HR	0.05	1.05 (1.04-1.07)	< 0.001	0.05	1.05 (1.03-1.07)	< 0.001
RR	0.08	1.08 (1.00-1.17)	0.047	0.10	1.10 (1.02-1.19)	0.014
Ca	-1.30	0.26 (0.09-0.73)	0.011	-1.78	0.17 (0.06-0.48)	0.001
BUN	0.14	1.15 (1.09-1.23)	< 0.001	0.11	1.12 (1.05-1.19)	< 0.001

SAP: Severe acute pancreatitis; ARDS: Acute respiratory distress syndrome; OR: Odds ratio; HR: Heart rate; RR: Respiratory rate; Ca: Serum calcium concentration; BUN: Blood urea nitrogen.