Table 4. Values relating to sensitivity, specificity, positive and negative predictive values, positive and negative likelihood ratios and accuracy of magnetic resonance imaging, compared with arthroscopy (gold-standard), for each evaluator.
| Subscapularis full-thickness tear | Subscapularis tear (full-thickness + partial) | |||||
|---|---|---|---|---|---|---|
| Mean | 95% CI | Mean | 95% CI | |||
| Inferior | Superior | Inferior | Superior | |||
| Shoulder surgeon (1st evaluation) | ||||||
| Sensitivity | 39.3% | 27.2% | 52.1% | 51.1% | 43.2% | 59.1% |
| Specificity | 91.7% | 87.5% | 96.3% | 82.0% | 72.4% | 92.3% |
| Positive predictive value | 64.7% | 49.2% | 81.4% | 86.6% | 79.1% | 94.3% |
| Negative predictive value | 79.5% | 73.1% | 86.7% | 42.4% | 33.4% | 51.7% |
| Accuracy | 77.0% | 71.2% | 83.5% | 60.5% | 53.2% | 67.3% |
| Shoulder surgeon (2nd evaluation) | ||||||
| Sensitivity | 35.7% | 23.2% | 48.3% | 59.0% | 51.0% | 67.1% |
| Specificity | 94.4% | 91.2% | 98.5% | 78.7% | 68.3% | 89.8% |
| Positive predictive value | 71.4% | 55.1% | 88.4% | 86.3% | 79.7% | 93.2% |
| Negative predictive value | 79.1% | 73.2% | 85.2% | 45.7% | 36.6% | 55.5% |
| Accuracy | 78.0% | 72.7% | 84.4% | 65.0% | 58.3% | 72.3% |
| MSK radiologist 1 | ||||||
| Sensitivity | 71.4% | 60.1% | 83.4% | 83.5% | 77.7% | 90.0% |
| Specificity | 85.4% | 80.2% | 91.1% | 45.9% | 33.4% | 58.1% |
| Positive predictive value | 65.6% | 53.1% | 77.2% | 77.9% | 71.6% | 84.7% |
| Negative predictive value | 88.5% | 83.2% | 94.7% | 54.9% | 41.1% | 69.3% |
| Accuracy | 81.5% | 76.2% | 87.7% | 72.0% | 66.3% | 78.2% |
| MSK radiologist 2 | ||||||
| Sensitivity | 57.1% | 44.2% | 70.2% | 87.1% | 82.7% | 93.3% |
| Specificity | 86.1% | 80.1% | 92.1% | 41.0% | 29.5% | 53.6% |
| Positive predictive value | 61.5% | 48.4% | 75.3% | 77.1% | 70.2% | 84.1% |
| Negative predictive value | 83.8% | 78.5% | 90.2% | 58.1% | 43.7% | 73.2% |
| Accuracy | 78.0% | 72.5% | 84.1% | 73.0% | 67.3% | 79.4% |
CI = confidence interval; MSK = musculoskeletal.