Table 3.

Diagnostic efficiency of the GAD-7 with CIDI-GAD as a gold standard

Cut-off	Sensitivity	Specificity	YI	PPV (%)	NPV (%)	LR+	LR-
≥5	0.882	0.643	0.525	3.2	99.7	2.47	0.18
≥6	0.824	0.728	0.552	3.8	99.7	3.03	0.24
≥7	0.784	0.808	0.592	4.5	99.6	4.08	0.27
≥8	0.725	0.835	0.560	6.2	99.5	4.39	0.33
≥9	0.667	0.863	0.530	6.5	99.4	4.87	0.39
≥10	0.627	0.883	0.510	7.1	99.4	5.36	0.42

YI Youden Index, PPV Positive predictive value, NPV Negative predictive value, LR+ Positive likelihood ratio, LR- Negative likelihood ratio