Journal
EPIDEMIOLOGY AND PSYCHIATRIC SCIENCES
Volume 20, Issue 4, Pages 345-355Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S204579601100031X
Keywords
Diagnostic techniques and procedures; post-traumatic stress disorder; trauma symptom inventory; validation studies
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Aim. The trauma symptom inventory (TSI; Briere, 1995) is a useful instrument for the assessment of post-traumatic and common trauma-related mental health symptoms. The purpose of the study was to validate the Italian version of the original TSI. Methods. Participants from non-clinical (n = 285), clinical (n = 110) and post-traumatic (n = 30) samples completed the TSI as part of a battery that included self-report measures of trauma exposure [MMPI-2 PK scale and Impact of Event Scale-Revised (IES-R)] and of psychological symptoms [brief symptom inventory (BSI) and symptom questionnaire (SQ)]. TSI validity scales were compared with MMPI-2 validity scales in order to assess convergent validity. Results. The TSI Italian version showed adequate internal consistency reliability and a good convergent validity. Discriminant function analysis indicates a classification accuracy of TSI scales of 90% for true-positive and 91.4% for true-negative post-traumatic stress disorder (PTSD) cases. A revised three-factor structural model, which demonstrated an adequate and the best fit for the data, was proposed. Conclusions. The study extended the generalization and validity of TSI and provided some suggestions for eventually revisiting factorial structure of the questionnaire.
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