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Show the comparison between radiological and intraoperative diagnosis of ossicular fixation tympanosclerosis
| Positive surgical fixation | Negative surgical fixation | Total | ||
|---|---|---|---|---|
| Scans suggestive of fixation | 62 | 17 | 79 | PPV = 62/79, 78.6% |
| Scans not suggestive of fixation | 2 | 859 | 861 | NPV = 859/861, 99.7% |
| Total | 64 | 876 | 940 | |
| Sensitivity = 62/64, 96.8% | Specificity = 859/876, 98% |
Note: Positive predictive value (PPV) = 78.5%; negative predictive value = 99.7%; sensitivity = 96.8%; specificity = 98%.
