Table 2. Comparison of the cognitive and driving functions between SDG and USDG.

TMT-A score	Sensitivity	95% CI	Specificity	95% CI	Youden index	+LR	−LR	PPV	NPV
30	0.968	0.890–0.996	0.833	0.586–0.964	0.802	5.81	0.04	95.300	88.200
31	0.937	0.845–0.982	0.889	0.653–0.986	0.825	8.43	0.07	96.700	80.000
32	0.937	0.845–0.982	0.944	0.727–0.999	0.881	16.86	0.07	98.300	81.000
42	0.762	0.638–0.860	0.944	0.727–0.999	0.706	13.71	0.25	98.000	53.100
TMT-B score	Sensitivity	95% CI	Specificity	95% CI	Youden index	+LR	−LR	PPV	NPV
77	0.921	0.824–0.974	0.889	0.653–0.986	0.810	8.29	0.09	96.700	76.200
78	0.905	0.804–0.964	0.889	0.653–0.986	0.794	8.14	0.11	96.600	72.700
79	0.905	0.804–0.964	0.944	0.727–0.999	0.849	16.29	0.10	98.300	73.900
106	0.603	0.472–0.724	0.944	0.727–0.999	0.548	10.86	0.42	97.400	40.500

TMT: trail making test, CI: confidence interval, +LR: positive likelihood ratio, −LR: negative likelihood ratio, PPV: positive predictive value, NPV: negative predictive value