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Table 3 Diagnostic efficiency of the GAD-7 with CIDI-GAD as a gold standard

From: Assessing anxiety among adolescents in Hong Kong: psychometric properties and validity of the Generalised Anxiety Disorder-7 (GAD-7) in an epidemiological community sample

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

  1. YI Youden Index, PPV Positive predictive value, NPV Negative predictive value, LR+ Positive likelihood ratio, LR- Negative likelihood ratio
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BMC Psychiatry

ISSN: 1471-244X

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