Diagnostic performance of ICH attenuation histogram parameters for discriminating tumor and nontumorous ICHs
| Parameter | Az Value | 95% CI | Cutoff Valuea | Sensitivity (%) | Specificity (%) |
|---|---|---|---|---|---|
| Minimum | 0.71 | 0.59–0.84 | 17 | 62.2 | 85.0 |
| Percentiles | |||||
| 5th | 0.81 | 0.72–0.91 | 34 | 65.6 | 85.0 |
| 25th | 0.81 | 0.71–0.92 | 44 | 70.0 | 80.0 |
| 50th | 0.78 | 0.66–0.89 | 53 | 65.6 | 75.0 |
| 75th | 0.74 | 0.60–0.87 | 60 | 72.2 | 65.0 |
| 95th | 0.69 | 0.54–0.84 | 63 | 90.0 | 45.0 |
| Mean | 0.78 | 0.66–0.90 | 49.11 | 81.1 | 65.0 |
| Skewness | 0.78 | 0.67–0.88 | −0.02 | 75.0 | 25.0 |
Note:—Az indicates area under the receiver operating characteristic curve.
↵a Determined by maximizing the Youden index.