Cutoff Scores and Performances of the Questionnaires for Screening for Any Mental Disordera
| Questionnaire | Cutoff Scoreb | Total Accuracy | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|
| 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. | ||||||
| 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 |