Table 5.
Analysis of diagnostic parameters
| Diagnostic parameter | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) |
|---|---|---|---|---|---|
| ESR (n = 64) | 73.7 | 88.9 | 73.7 | 88.9 | 84.4 |
| WBC (n = 64) | 21.1 | 91.1 | 50.0 | 73.2 | 70.3 |
| CRP (n = 64) | 57.9 | 80.0 | 55.0 | 81.8 | 73.4 |
| Aspiration (n = 64) | 15.8 | 97.8 | 75.0 | 73.3 | 73.4 |
| Soft tissue culture (n = 64) | 36.8 | 91.1 | 63.6 | 77.4 | 75.0 |
| Frozen sections (n = 52) | 86.6 | 100.0 | 100.0 | 94.9 | 96.2 |
PPV = positive predictive value; NPV = negative predictive value; ESR = erythrocyte sedimentation rate; WBC = leukocyte count; CRP = C-reactive protein.