Table 3.
Comorbidity Scores and Their Performance in a New Jersey Medicare/ PAAD Population in Predicting One-Year Mortality
| New Jersey /PAAD | ||||
|---|---|---|---|---|
| Score | Model | Degrees of Freedom | c | 95% Confidence Interval |
| Age + gender | 2 | 0.658 | (0.654–0.662) | |
| CDS-1 | Age + gender + CDS-1 | 3 | 0.703 | (0.699–0.707) |
| Romano (1 score) | Age + gender + Romano | 3 | 0.771 | (0.767–0.775) |
| Romano + CDS-1 | Age + gender + Romano + CDS-1 | 4 | 0.777 | (0.773–0.780) |
| Romano +# of RX* | Age + gender + Romano + numb. of Rx | 4 | 0.775 | (0.771–0.779) |
| Romano (17 cat.) † | Age + gender + Romano17 | 19 | 0.781 | (0.777–0.784) |
| Elixhauser (30 cat.) | Age + gender + Elixhauser30 | 32 | 0.781 | (0.778–0.785) |
| Elixhauser plus †† | Age + gender + Elixhauser30+ AMI + stroke | 34 | 0.783 | (0.779–0.786) |
*
Prescription medications that have different chemical structures but may be of the same therapeutic group.
†
All Romano coded conditions were included as 17 binary categories in the model: 1=condition present) or 0=condition absent.
††
Thirty Elixhauser indicators based on ICD-9-CM diagnoses plus two indicators for acute myocardial infarction (AMI) and stroke according to Romano's ICD-9-CM coding.