Areas under the curve for variation combinations of comorbidity indices and demographic data
| C-statistic | p Value | |
|---|---|---|
| 30-day mortality | ||
| Age, race, sex | 0.61 (0.60–0.62) | – |
| Charlson only | 0.65 (0.65–0.66) | Reference |
| Charlson, age, race, sex | 0.67 (0.66–0.67) | <0.001 |
| Elixhauser only | 0.66 (0.65–0.67) | Reference |
| Elixhauser, age, race, sex | 0.69 (0.68–0.70) | <0.001 |
| 90-day mortality | ||
| Age, race, sex | 0.60 (0.59–0.60) | – |
| Charlson only | 0.69 (0.68–0.70) | Reference |
| Charlson, age, race, sex | 0.69 (0.69–0.70) | <0.001 |
| Elixhauser only | 0.71 (0.70–0.71) | Reference |
| Elixhauser, age, race, sex | 0.73 (0.72–0.73) | <0.001 |
| 180-day mortality | ||
| Age, race, sex | 0.59 (0.59–0.60) | – |
| Charlson only | 0.71 (0.70–0.71) | Reference |
| Charlson, age, race, sex | 0.71 (0.71–0.72) | <0.001 |
| Elixhauser only | 0.72 (0.71–0.72) | Reference |
| Elixhauser, age, race, sex | 0.73 (0.73–0.74) | <0.001 |
| 365-day mortality | ||
| Age, race, sex | 0.59 (0.58–0.59) | – |
| Charlson only | 0.72 (0.71–0.72) | Reference |
| Charlson, age, race, sex | 0.72 (0.72–0.73) | <0.001 |
| Elixhauser only | 0.72 (0.72–0.72) | Reference |
| Elixhauser, age, race, sex | 0.73 (0.73–0.74) | <0.001 |
p Value for difference comparing the comorbidity index alone to a model with the respective comorbidity index plus age, race and sex included in the model.