Table 3.
A Comparison of the Diagnostic Performance of Two Models for Diagnosing Fracture Related Infection
| Test | ESR + CRP | ESR + CRP + P/V Ratio | P-Value |
|---|---|---|---|
| Area Under the Curve (AUC) | 0.810 | 0.879 | 0.0814 |
| Specificity | 91.7% (77.5-98.3) | 97.2% (85.5-99.9) | |
| Sensitivity | 64.7% (38.3-85.8) | 64.7% (38.3-85.8) | |
| Accuracy | 83.0% | 86.8% | |
| Positive Likelihood Ratio | 7.8 | 23.3 | |
| Negative Likelihood Ratio | 0.4 | 0.4 | |
| Positive Predictive Value | 78.6% | 91.7% | |
| Negative Predictive Value | 84.6% | 85.4% |
*P/V = Platelet Count to Mean Platelet Volume Ratio; ESR = Erythrocyte Sedimentation Rate; CRP = C-Reactive Protein.