Table 2.
Receiver Operating Characteristic (ROC) Analyses for spatial auditory spatial discrimination measures, including interaural time differences (ITD), interaural level differences (ILD), minimum audible angle (MAA) and bisection accuracy (BA). The table reports sensitivity, specificity, area under the curve (AUC) with standard error (SE), Youden’s Index, optimal cut-off values for distinguishing between young and middle-aged adults. Higher AUC vales indicate greater diagnostic accuracy.
| Variable | Sensitivity (%) | Specificity (%) | AUC, SE | Youden’s Index | Cut Off for middle-aged group |
|---|---|---|---|---|---|
| ITD | 62.18 | 90.91 | 0.88, 0.05 | 0.59 | > 0.05 |
| ILD | 81.82 | 90 | 0.87, 0.05 | 0.64 | > 2.4 |
| MAA | 90.91 | 100 | 0.99, 0.01 | 0.91 | > 9.08 |
| BA | 77.27 | 90.91 | 0.82, 0.07 | 0.68 | < 9 |
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