Discrimination analysis of MR microscopic criteria
| Variable | Sensitivity (%) | Specificity (%) | Accuracy (%) |
|---|---|---|---|
| Fat area (%) | |||
| 4 | 94.5 | 82.1 | 90.4 |
| 5* | 92.7 | 89.3 | 91.6 |
| 10 | 87.3 | 100.0 | 91.6 |
| 15 | 87.3 | 100.0 | 84.3 |
| Lobule area (%) | |||
| 95 | 94.5 | 75.0 | 88.0 |
| 90* | 92.7 | 100.0 | 95.2 |
| 85 | 85.5 | 100.0 | 90.4 |
| 80 | 76.4 | 100.0 | 84.3 |
| No. of sialoectatic foci | |||
| 3 | 87.3 | 75.0 | 83.1 |
| 6* | 80.0 | 100.0 | 86.7 |
| 9 | 78.2 | 100.0 | 85.5 |
| Fat area (5%) + no. of sialoectatic foci (6) | 96.4 | 100.0 | 97.6 |
| Lobule area (90%) + no. of sialoectatic foci (6) | 96.4 | 100.0 | 97.6 |
* Best cutoff points.