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 stayab (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