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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