U/S | Interpretation | Clinical examination | |
Improved (N = 34) | Not improved (N = 6) | ||
Improved (N = 22) | 18 | 4 | |
Not improved (N = 18) | 16 | 2 | |
Sensitivity | 53.4% | ||
Specificity | 33.3% | ||
PPV | 78.2% | ||
NPV | 11.1% |