Receiver Operating Characteristic (ROC) Curve Comparisons for Initial, Maximum, and Change in Troponin on Mortality
| Troponin Comparison | Difference in ROC Curves | 95% Wald Confidence Limits | P Value |
|---|---|---|---|
| Maximum vs initial | 0.0235 | 0.0119 to 0.0352 | <0.0001 |
| Change vs initial | –0.0434 | –0.0670 to –0.0198 | 0.0003 |
| Change vs maximum | –0.0670 | –0.0839 to –0.0500 | <0.0001 |
Note: Nonparametric comparisons of area under the ROC curves were performed to test for significant differences in the ability of each univariate model to predict mortality. The maximum troponin value model predicts death significantly better than the initial troponin model and the change in troponin model.