Table 6.
Generalized linear model for total cost of hospitalization plus re-admission
| Variable | Category | Estimate-exp (B) | Confidence interval | P value |
|---|---|---|---|---|
| Intercept | 40,733.373 | (39,708.56, 41,784.63) | <0.001 | |
| Anastomotic leak (ref = no leak) | 1.802 | (1.78, 1.83) | <0.001 | |
| Agea | 1.000 | (1.00, 1.00) | 0.222 | |
| Gender (ref = male) | 0.969 | (0.96, 0.98) | <0.001 | |
| Race (ref = white) | Black | 1.079 | (1.07, 1.09) | <0.001 |
| Hispanic | 1.189 | (1.17, 1.21) | <0.001 | |
| Other | 0.974 | (0.97, 0.98) | <0.001 | |
| Payer (ref = Medicare) | Medicaid | 1.065 | (1.05, 1.08) | <0.001 |
| Commercial | 0.984 | (0.98, 0.99) | <0.001 | |
| Other | 0.982 | (0.97, 1) | 0.015 | |
| Medical stabilization (ref = no) | Yes | 1.316 | (1.31, 1.33) | <0.001 |
| Admission type (ref = elective) | Urgent | 1.039 | (1.03, 1.05) | <0.001 |
| Emergency | 1.05 | (1.04, 1.06) | <0.001 | |
| Other | 1.041 | (0.99, 1.1) | 0.145 | |
| Type of index surgery (ref = left/sigmoid) | Right colon | 0.273 | (0.27, 0.28) | <0.001 |
| Colorectal | 0.33 | (0.33, 0.33) | <0.001 | |
| Severity of illness (ref = extreme) | Minor | 0.483 | (0.48, 0.49) | <0.001 |
| Moderate | 0.273 | (0.27, 0.28) | <0.001 | |
| Major | 0.33 | (0.33, 0.33) | <0.001 | |
| Number of beds (ref ≥500) | <500 beds | 1.062 | (1.05, 1.07) | <0.001 |
| Geographic location of provider (ref = midwest) | Northeast | 1.129 | (1.12, 1.14) | <0.001 |
| South | 1.024 | (1.01, 1.03) | <0.001 | |
| West | 1.165 | (1.15, 1.18) | <0.001 | |
| Location of the hospital (ref = urban) | Rural | 1.061 | (1.05, 1.07) | <0.001 |
| Teaching hospital (ref = no) | Teaching | 1.083 | (1.08, 1.09) | <0.001 |
| Charlson Comorbidity Indexa | 1.005 | (1, 1.01) | <0.001 |
aAge and Charlson Comorbidity Index are continuous variables with no reference groups