Table 3.
Classification accuracy, sensitivity, and specificity of the individual 3D features as derived from ROC-AUC curve analysis
| Accuracy | Sensitivity | Specificity | |||||
|---|---|---|---|---|---|
| iRBD versus other | iRBD versus prodromal RBD | Prodromal RBD versus other | iRBD+prodromal RBD versus other | iRBD versus prodromal RBD+other | |
| Any LMs 0.1–15 s | |||||
| 3D index (any <15 s) | 0.894 | 0.825 | 0.938 | 0.845 | 0.900 | 0.722 | 0.793 | 0.167 | 0.969 | 0.811 | 0.845 | 0.781 | 0.877 | 0.825 | 0.902 |
| 3D ratio (any <15 s) | 0.894 | 0.900 | 0.891 | 0.828 | 0.900 | 0.667 | 0.805 | 0.167 | 0.984 | 0.811 | 0.724 | 0.891 | 0.869 | 0.700 | 0.951 |
| 3D extent (any <15 s) | 0.837 | 0.675 | 0.938 | 0.862 | 0.900 | 0.778 | 0.805 | 0.222 | 0.969 | 0.746 | 0.534 | 0.938 | 0.828 | 0.600 | 0.939 |
| 3D intensity (any <15 s) | 0.827 | 0.850 | 0.813 | 0.828 | 0.950 | 0.556 | 0.793 | 0.167 | 0.969 | 0.754 | 0.690 | 0.813 | 0.803 | 0.575 | 0.915 |
| Any jerks 0.1–2 s | |||||
| 3D index (any <2 s) | 0.885 | 0.925 | 0.859 | 0.879 | 0.975 | 0.667 | 0.793 | 0.056 | 1.000 | 0.811 | 0.810 | 0.813 | 0.861 | 0.850 | 0.866 |
| 3D ratio (any <2 s) | 0.904 | 0.975 | 0.859 | 0.897 | 0.950 | 0.778 | 0.805 | 0.111 | 1.000 | 0.820 | 0.776 | 0.859 | 0.877 | 0.950 | 0.841 |
| 3D extent (any <2 s) | 0.894 | 0.800 | 0.953 | 0.879 | 0.850 | 0.944 | 0.780 | 0.000 | 1.000 | 0.820 | 0.845 | 0.797 | 0.902 | 0.800 | 0.951 |
| 3D intensity (any <2 s) | 0.885 | 0.900 | 0.875 | 0.897 | 0.975 | 0.722 | 0.793 | 0.056 | 1.000 | 0.795 | 0.707 | 0.875 | 0.861 | 0.875 | 0.854 |
| Nonperiodic LMs 0.1–15 s | |||||
| 3D index (nplm <15 s) | 0.865 | 0.850 | 0.875 | 0.828 | 0.925 | 0.611 | 0.793 | 0.056 | 1.000 | 0.787 | 0.776 | 0.797 | 0.844 | 0.675 | 0.927 |
| 3D ratio (nplm <15 s) | 0.875 | 0.825 | 0.906 | 0.845 | 0.875 | 0.778 | 0.793 | 0.056 | 1.000 | 0.779 | 0.638 | 0.906 | 0.861 | 0.825 | 0.878 |
| 3D extent (nplm <15 s) | 0.827 | 0.750 | 0.875 | 0.862 | 0.875 | 0.833 | 0.780 | 0.000 | 1.000 | 0.721 | 0.552 | 0.875 | 0.836 | 0.750 | 0.878 |
| 3D intensity (nplm <15 s) | 0.827 | 0.750 | 0.875 | 0.828 | 0.850 | 0.778 | 0.793 | 0.111 | 0.984 | 0.730 | 0.569 | 0.875 | 0.828 | 0.750 | 0.866 |
| Nonperiodic jerks 00.1–2 s | |||||
| 3D index (nplm <2 s) | 0.846 | 0.825 | 0.859 | 0.845 | 0.925 | 0.667 | 0.805 | 0.111 | 1.000 | 0.770 | 0.672 | 0.859 | 0.836 | 0.750 | 0.878 |
| 3D ratio (nplm <2 s) | 0.856 | 0.800 | 0.891 | 0.845 | 0.925 | 0.667 | 0.805 | 0.111 | 1.000 | 0.770 | 0.828 | 0.719 | 0.844 | 0.700 | 0.915 |
| 3D extent (nplm <2 s) | 0.885 | 0.900 | 0.875 | 0.862 | 0.825 | 0.944 | 0.780 | 0.000 | 1.000 | 0.803 | 0.741 | 0.859 | 0.877 | 0.800 | 0.915 |
| 3D intensity (nplm <2 s) | 0.837 | 0.775 | 0.875 | 0.845 | 0.875 | 0.778 | 0.805 | 0.111 | 1.000 | 0.762 | 0.845 | 0.688 | 0.828 | 0.600 | 0.939 |
iRBD, isolated REM sleep behavior disorder; REM, rapid eye movement; RWA, REM sleep without atonia; LM, leg movement; other, other disorders with motor activity during sleep.