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Table 2 Household informant instrument performance for screening for mental disorders screening method-a (household informant)

From: A two-phase approach for the identification of refugees with priority need for mental health care in Lebanon: a validation study

  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
  1. aSevere disorders are current psychosis or any current mental disorder and severe impairment, n = 27
  2. bModerate to severe disorders are current severe disorders or any current mental disorder with at least moderate impairment, n = 53
  3. Phase-1: N = 748; Phase-2: N = 194; proportions shown are probability weight adjusted for level of participation by screening stratum
  4. VOLTAC vignette of local terms and concepts; WASSS-H WHO-UNHCR assessment schedule of serious symptoms in humanitarian settings-household interview (WASSS-H)
  5. PPV positive predictive value, NPV negative predictive value