Table 2. Sensitivity, specificity, Youden Index, and the likelihood ratios of the risk score model in the GAIN bipolar disorder dataset as a training set.

Score	Sensitivity	Specificity	Youden Index	PPV	NPV	LR+	LR−
180	0.905	0.685	0.590	0.735	0.882	2.871	0.139
181	0.880	0.723	0.604	0.755	0.862	3.182	0.166
182	0.854	0.776	0.630	0.787	0.846	3.807	0.188
183	0.813	0.817	0.630	0.812	0.819	4.449	0.229
184	0.777	0.854	0.631	0.837	0.798	5.322	0.261
185	0.747	0.879	0.626	0.857	0.782	6.181	0.288

Note: PPV: positive predictive value; NPV: negative predictive value; LR+: the likelihood ratio for a positive test result; LR−: the likelihood ratio for a negative test result.