Mortality and health care burden of Budd Chiari syndrome in the United States: A nationwide analysis (1998-2017)

Table 4 Multivariate model on length of stay

	Response	Beta estimate	Standard error	P value for Beta	P value for type 3 test
Primary payer	1: Medicare (reference)	0.000	-	-	0.022
	2: Medicaid	0.053	0.037	0.144
	3: Private insurance	0.084	0.030	0.005
Hospital bed size	1: Small (reference)	0.000	-	-	< 0.0001
	2: Medium	0.113	0.049	0.021
	3: Large	0.293	0.042	<.0001
Hospital location and teaching status	1: Rural (reference)	0.000	-	-	< 0.0001
	2: Urban nonteaching	0.206	0.054	<.0001
	3: Urban teaching	0.433	0.050	<.0001
Hospital region	1: Northeast	0.171	0.038	<.0001	< 0.0001
	2: Midwest	0.017	0.038	<.0001
	3: South	0.055	0.034	<.0001
	4: West (reference)	0.000
Complications
Acute liver failure	Yes (reference = No)	0.223	0.057	< 0.0001	< 0.0001
Acute respiratory Failure	Yes (reference = No)	0.380	0.052	< 0.0001	< 0.0001
Acute kidney injury	Yes (reference = No)	0.255	0.035	< 0.0001	< 0.0001
Ascites	Yes (reference = No)	0.118	0.028	< 0.0001	< 0.0001
Spontaneous bacterial peritonitis	Yes (reference = No)	0.480	0.076	< 0.0001	< 0.0001
IVC thrombosis	Yes (reference = No)	0.138	0.052	0.008	0.008
Intestinal infarct/acute vascular insufficiency	Yes (reference = No)	0.383	0.088	< 0.0001	< 0.0001
cancer	Yes (reference = No)	-0.278	0.036	< 0.0001	< 0.0001
Elixhauser Comorbidity Score excluding liver disease		0.019	0.001	< 0.0001	< 0.0001

IVC: Inferior vena cava.