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. 2017 Aug 29;4(3):e35. doi: 10.2196/mental.5453

Table 3.

Predictive value of the Web Screening Questionnaire (WSQ) for individual disorders according to the Mini-International Neuropsychiatry Interview (MINI)-Plus in the general population subsample (n=1117). Numbers in the table reflect the use of each screening subscale to detect any diagnosis rather than only the diagnosis associated with the subscale. WSQ cut-off scores were derived from the original cut-offs recommended by Donker et al (2009) [8]. WSQ cut-off scores: depression: Q1≥5 and Q2=1; panic disorder: Q4≥1; agoraphobia: Q5=1; panic disorder with agoraphobia Q4≥1 and Q5=1; social phobia: Q8=1 and Q9=1; specific phobia: Q6 or Q7=1; generalized anxiety disorder (GAD): Q3≥2; post-traumatic stress disorder (PTSD): Q10=1 or Q11=1; obsessive compulsive disorder (OCD): Q12≥1; and alcohol abuse or dependence: Q13≥2 and Q14≥3.

DSM-IV-TRa
diagnosis
MINIb
prevalence
(%)
WSQc
prevalence
(%)
True
positive
False
positive
False
negative
True
negative
PPVd
(95% CI)
NPVe
(95% CI)
Depressive disorder 12 (1.107 28 (2.51) 6 22 6 1083 0.21 (0.08-0.41) 0.99 (0.99-1.00)
Panic disorder 4 (0.36) 64 (5.73) 4 60 0 1053 0.06 (0.02-0.15) 1.00 (0.99-1.00)
Agoraphobia 27 (2.42) 52 (4.66) 17 35 10 1055 0.33 (0.20-0.47) 0.99 (0.98-1.00)
Panic disorder with agoraphobia 2 (0.18) 11 (0.98) 2 9 0 1106 0.18 (0.02-0.52) 1.00 (0.99-1.00)
Social phobia 9 (0.81) 47 (4.21) 7 40 3 1067 0.15 (0.06-0.28) 1.00 (0.99-1.00)
Specific phobia 9 (0.81) 281 (25.16) 9 272 0 836 0.03 (0.01-0.06) 1.00 (0.99-1.00)
Generalized anxiety disorder 13 (1.16) 46 (4.12) 8 38 5 1066 0.17 (0.08-0.31) 1.00 (0.99-1.00)
Post-traumatic stress disorder 5 (0.45) 511 (45.75) 5 506 0 606 0.01 (0.03-0.02) 1.00 (0.99-1.00)
Obsessive compulsive disorder 6 (0.54) 55 (4.92) 4 51 2 1060 0.07 (0.02-0.18) 1.00 (0.99-1.00)
Alcohol abuse or dependence 51 (4.57) 110 (9.85) 28 82 23 984 0.25 (0.18-0.35) 0.98 (0.97-0.99)

aDSM-IV-TR: Diagnostic and Statistical Manual of Mental Disorders, 4th edition-Text Revision.

bMINI: Mini International Neuropsychiatric Interview; MINI-Plus 5.0.0.

cWSQ: Web Screening Questionnaire.

dPPV: positive predictive value.

eNPV: negative predictive value.