Screening of Generalized Anxiety Disorder in Patients with Epilepsy: Using a Valid and Reliable Indonesian Version of Generalized Anxiety Disorder-7 (GAD-7)

Table 5

Diagnostic accuracy assessment.

GAD	GAD (MINI ICD-10)
(GAD-7)	Yes	No	Total
Yes (≥7)	24	19	43
No (<7)	0	103	103
Total	24	122	146

Sensitivity = a  : (a+c) = 24  : (24+0) = 24  : 24 = 100%
Specificity = d  : (b+d) = 103  : (19+103) = 103  : 122 = 84,4%
Positive Predictive Value (PPV) = a  : (a+b) = 24  : (24+19) = 24  : 43 = 55,8%
Negative Predictive Value (NPV) = d  : (c+d) = 103  : (0+103) = 103  : 103 = 100%