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Predictive validity of the Trauma Screening Questionnaire in detecting post-traumatic stress disorder in patients with psychotic disorders

  • Paul A. J. M. de Bont (a1), David P. G. van den Berg (a2), Berber M. van der Vleugel (a3), Carlijn de Roos (a4), Ad de Jongh (a5), Mark van der Gaag (a6) and Agnes van Minnen (a7)...
Abstract
Background

Post-traumatic stress disorder (PTSD) is highly prevalent in patients with a psychotic disorder. Because a PTSD diagnosis is often missed in patients with psychosis in routine care, a valid screening instrument could be helpful.

Aims

To determine the validity of the Trauma Screening Questionnaire (TSQ) as a screening tool for PTSD among individuals with psychotic disorders.

Method

Among 2608 patients with a psychotic disorder, the rate of trauma exposure was determined and the TSQ was administered to screen for PTSD. PTSD status was verified in 455 patients using the Clinician-Administered PTSD Scale (trial registration: ISRCTN 79584912).

Results

Trauma exposure was reported by 78.2% of the 2608 patients. PTSD prevalence was estimated at 16% (95% CI 14.6–17.4%) compared with 0.5% reported in the patients' clinical charts. A TSQ cut-off score of six predicted PTSD with 78.8% sensitivity, 75.6% specificity, 44.5% correct positives and 93.6% correct negatives.

Conclusions

The TSQ seems to be a valid screening tool for PTSD in patients with a psychotic disorder.

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Copyright
Corresponding author
Paul A. J. M. de Bont, Postbox 103, 5830 AC Boxmeer, The Netherlands. Email address: paj.de.bont@gzoostbrabant.nl
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Declaration of interest

None.

Footnotes
References
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Predictive validity of the Trauma Screening Questionnaire in detecting post-traumatic stress disorder in patients with psychotic disorders

  • Paul A. J. M. de Bont (a1), David P. G. van den Berg (a2), Berber M. van der Vleugel (a3), Carlijn de Roos (a4), Ad de Jongh (a5), Mark van der Gaag (a6) and Agnes van Minnen (a7)...
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