Table 2 Topographic statistical analysis
Outerbridge grade | Sensitivity | Specificity | Positive predictive value | Negative predictive value | p value |
|---|---|---|---|---|---|
I | 8.8 | 99.5 | 80.0 | 92.0 | 0.00 |
II | 67.9 | 99.2 | 76.6 | 98.2 | 0.00 |
III | 74.0 | 99.6 | 85.2 | 99.3 | 0.00 |
IV | 83.3 | 99.8 | 84.4 | 99.8 | 0.00 |