Table 4 Validity of MRI and NIRS in evaluation of low-grade cartilage lesions
MRI | NIRS | |
|---|---|---|
Correctly positive test | 19 | 20 |
Correctly negative test | 15 | 27 |
False positive test | 13 | 1 |
False negative test | 1 | 0 |
Sensitivity | 0.950 | 1.000 |
Specificity | 0.536 | 0.964 |
Positive predictive value | 0.678 | 0.714 |
Negative predictive value | 0.937 | 1.000 |
Likelihood ratio positive test | 2.05 | 27.7 |
Likelihood ratio negative test | 0.093 | ∞ |
Accuracy | 0.708 | 0.979 |