Table 3.

Cutoff Scores and Performances of the Questionnaires for Screening for Any Mental Disorder^a

Questionnaire	Cutoff Scoreb	Total Accuracy	Sensitivity	Specificity	PPV	NPV
SRQ-20	8	0.85	0.81	0.86	0.78	0.89
WHO-5	11	0.85	0.77	0.89	0.81	0.87
COOP/WONCA Chartsc	17	0.87	0.84	0.88	0.80	0.91
Charts item
Feelings	3	0.85	0.84	0.86	0.77	0.90
Daily Activities	2	0.74	0.91	0.64	0.60	0.92
Social Activities	3	0.76	0.59	0.86	0.70	0.78
Overall Health	5	0.72	0.64	0.82	0.67	0.80
Charts 3-item combinationd	9	0.87	0.86	0.88	0.81	0.92

COOP/WONCA = Dartmouth Primary Care Cooperative Research Network, and World Organization of National Colleges, Academies, and Academic Associations of General Practitioners/Family Physicians; NPV = negative predictive value; PPV = positive predictive value; ROC = receiver operating characteristic; SRQ-20 = 20-item Self-Reporting Questionnaire; WHO-5 = World Health Organization–Five Well-Being Index.

^a Reference standard was diagnosis of the disorders by SCID, the Structured Clinical Interview for the DSM-IV (Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition).

^b Cutoff scores were chosen based on the scores having the highest total accuracy.

^c Total score using all 6 items.

^d Feelings, Daily Activities, and Social Activities.