Table 2.
Household informant instrument performance for screening for mental disorders screening method-a (household informant)
| Responders | Severe Disordera | Moderate or Severe Disorderb | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Positive Response | Sensitivity | Specificity | PPV | NPV | Sensitivity | Specificity | PPV | NPV | ||
| VOLTAC Items | n | % | % | % | % | % | % | % | % | % |
| No positive responses | 697 | 93.2 | ||||||||
| At least 1 positive response | 51 | 6.8 | 52.4 | 95.9 | 45.8 | 96.8 | 30.7 | 96.3 | 54.7 | 90.6 |
| At least 2 positive responses | 17 | 2.3 | 16.2 | 99.0 | 51.5 | 94.7 | 9.9 | 99.2 | 64.2 | 88.4 |
| At least 3 positive responses | 8 | 1.1 | 14.0 | 100.0 | 100.0 | 94.6 | 5.9 | 99.9 | 85.1 | 88.0 |
| At least 4 positive responses | 3 | 0.4 | 7.7 | 100.0 | 100.0 | 94.2 | 3.8 | 100.0 | 100.0 | 87.8 |
| WASSS-H Items | ||||||||||
| No positive responses | 513 | 68.6 | ||||||||
| At least 1 positive response | 235 | 31.4 | 95.0 | 71.3 | 18.0 | 99.5 | 85.1 | 74.8 | 32.8 | 97.2 |
| At least 2 positive responses | 174 | 23.3 | 75.5 | 79.0 | 19.2 | 98.0 | 68.8 | 82.1 | 35.7 | 94.8 |
| At least 3 positive responses | 85 | 11.4 | 41.1 | 90.7 | 22.7 | 95.9 | 38.7 | 92.7 | 43.5 | 91.3 |
| At least 4 positive responses | 35 | 4.7 | 23.8 | 96.7 | 32.1 | 95.0 | 16.2 | 97.1 | 44.4 | 88.9 |
| 5 positive responses | 4 | 0.5 | 2.2 | 99.6 | 28.3 | 93.9 | 2.1 | 99.8 | 55.0 | 87.5 |
| Combined Method A Instruments | ||||||||||
| No positive responses | 502 | 67.1 | ||||||||
| At least 1 positive response | 246 | 32.9 | 95.0 | 70.3 | 17.3 | 99.5 | 85.1 | 73.7 | 31.9 | 97.1 |
| At least 2 positive responses | 190 | 25.4 | 90.9 | 77.9 | 21.4 | 99.2 | 78.4 | 81.2 | 37.6 | 96.3 |
| At least 3 positive responses | 94 | 12.6 | 50.7 | 90.3 | 25.8 | 96.5 | 42.3 | 92.2 | 43.9 | 91.7 |
aSevere disorders are current psychosis or any current mental disorder and severe impairment, n = 27
bModerate to severe disorders are current severe disorders or any current mental disorder with at least moderate impairment, n = 53
Phase-1: N = 748; Phase-2: N = 194; proportions shown are probability weight adjusted for level of participation by screening stratum
VOLTAC vignette of local terms and concepts; WASSS-H WHO-UNHCR assessment schedule of serious symptoms in humanitarian settings-household interview (WASSS-H)
PPV positive predictive value, NPV negative predictive value