Table 3.

Sensitivity, specificity, PPV, and NPV for different cutoff scores of the K10, K6, and GHQ‐12 for predicting any mood or anxiety disorder in the past 30 days

Tools	Cutoffs	Sensitivity	Specificity	PPV	NPV	Prevalence (by each cutoff)	Youden's J statistic
K10	≥12	0.865	0.622	0.419	0.899	0.495	0.487
	≥13	0.838	0.662	0.439	0.868	0.458	0.500
	≥14	0.784	0.704	0.456	0.812	0.413	0.488
	≥15	0.757	0.741	0.480	0.771	0.378	0.498
	≥16	0.714	0.771	0.496	0.716	0.345	0.485
	≥17	0.692	0.808	0.533	0.663	0.312	0.500
	≥18	0.665	0.839	0.565	0.604	0.282	0.504
K6	≥7	0.843	0.612	0.407	0.887	0.497	0.455
	≥8	0.795	0.666	0.429	0.838	0.445	0.460
	≥9	0.751	0.726	0.464	0.777	0.389	0.477
	≥10	0.724	0.792	0.523	0.705	0.332	0.516
	≥11	0.665	0.847	0.579	0.591	0.276	0.512
	≥12	0.600	0.879	0.610	0.489	0.236	0.479
	≥13	0.514	0.901	0.621	0.392	0.199	0.453
GHQ‐12	≥8	0.941	0.424	0.340	0.968	0.664	0.364
	≥9	0.914	0.536	0.383	0.944	0.572	0.450
	≥10	0.865	0.640	0.432	0.894	0.481	0.505
	≥11	0.800	0.723	0.477	0.814	0.403	0.523
	≥12	0.681	0.793	0.510	0.672	0.321	0.474
	≥13	0.600	0.861	0.576	0.525	0.250	0.461
	≥14	0.524	0.886	0.592	0.432	0.213	0.410

Note. Optimal cutoff scores are in bold and italic font. GHQ‐12: 12‐item General Health Questionnaire; PPV: positive predictive value; NPV: negative predictive value.