TABLE 2.

Demographic and clinical variables for the index surgical admission, stratified by death or readmission within 30 days after discharge afterintestinal surgery.

	Total Cohort		Readmission or Death Within 30 Days		No Event		Univariate p Value
	n or median	% or IQR	n or median	% or IQR	n or median	% or IQR
n	440,742		61,757	14.0%	378,985	86.0%
Age	65 years	53 - 76	66	54 - 77	65	53 - 75	<0.001
Female	240,945	54.7%	34,246	55.5%	206,699	54.5%	0.001
Charlson Comorbidity Index Score	2	0 - 3	2	0 - 5	2	0 - 3	<0.001
Race/Ethnicity							<0.001
White	316,113	71.7%	43,882	71.1%	272,231	71.8%
Black	36,528	8.3%	5,955	9.6%	30,573	8.1%
Hispanic	51,416	11.7%	7,606	12.3%	43,810	11.6%
Other	27,012	6.1%	3,593	5.8%	23,419	6.2%
Missing	9,673	2.2%	721	1.2%	8,952	2.4%
Primary Payer							<0.001
Private	167,389	38.0%	19,317	31.3%	148,072	39.1%
Medicare	219,817	49.9%	34,124	55.3%	185,693	49.0%
Medicaid	29,537	6.7%	5,219	8.5%	24,318	6.4%
Other	23,999	5.4%	3,097	5.0%	20,902	5.5%
Procedurea
Colon	286,157	64.9%	39,831	64.5%	246,326	65.0%	0.016
Small Intestine	107,496	24.4%	21,074	34.1%	86,422	22.8%	<0.001
Rectal	56,861	12.9%	8,780	14.2%	48,081	12.7%	<0.001
Includes Colostomy	55,929	12.7%	10,199	16.5%	45,730	12.1%	<0.001
Includes Ileostomy	27,015	6.1%	7,523	12.2%	19,492	5.1%	<0.001
Indication							<0.001
Malignancy	182,412	41.4%	22,544	36.5%	159,868	42.2%
Diverticulitis	86,468	19.6%	2,376	3.8%	11,109	2.9%
Inflammatory Bowel Disease	13,485	3.1%	27,666	44.8%	130,711	34.5%
Other	158,377	35.9%	9,171	14.9%	77,297	20.4%
Emergent Admission	161,118	36.6%	27,278	44.2%	133,840	35.3%	<0.001
Length of Stay	7 days	5 - 10	8	6 - 13	7	5 - 10	<0.001
Discharge Destination							<0.001
Home	282,444	64.1%	30,509	49.4%	251,935	66.5%
Home with Home Health	104,695	23.8%	18,703	30.3%	85,992	22.7%
Other Facility	52,651	11.9%	12,328	20.0%	40,323	10.6%
Other	952	0.2%	217	0.4%	735	0.2%

^aPercentages are greater than 100%, as the coding allowed for multiple procedure types to occur in a single case