Race/ethnicity and socio-economic differences in colorectal cancer surgery outcomes: analysis of the nationwide inpatient sample

Table 4 Multivariable linear regression analysis of in-hospital length of stay after colorectal cancer surgery, Nationwide Inpatient Sample, 2007-2011

	In-Hospital Length of stay^ab (95 % CI)	P-value
Age	0.06 (0.05, 0.06)	<.0001
Sex		<.0001
Male	Ref
Female	−0.55 (−0.66,-0.45)
Race/Ethnicity		<.0001
White	Ref
Black	1.33 (1.16, 1.50)
Hispanic	0.18 (−0.02, 0.39)
Other	0.09 (−0.12, 0.30)
Residential Income		<.0001
Q4-Highest	Ref
Q3	0.33 (0.18, 0.47)
Q2	0.37 (0.22, 0.52)
Q1-Lowest	0.84 (0.68, 1.00)
Stage		<.0001
Non-Metastatic	Ref
Metastatic	1.76 (1.65, 1.87)
Insurance Type		<.0001
Private	Ref
Medicare	0.66 (0.51, 0.81)
Medicaid	2.91 (2.66, 3.16)
Other	1.72 (1.47, 1.96)
Residential Region		<.0001
Large metro	Ref
Small metro	−0.36 (−0.48,-0.24)
Micropolitan	−0.71 (−0.88,-0.54)
Comorbidities		<.0001
0	Ref
1	1.52 (1.40, 1.65)
≥ 2	3.01 (2.82, 3.21)

^aLength of hospital stay was calculated by subtracting the admission date from the discharge date with same-day stays coded as 0
^bAdjusted for age, sex, diagnosis year, race, income, stage, insurance, residential region and comorbidities

ISSN: 1471-2407