Reliability, Validity and Psychometric Properties of the Greek Translation of the Posttraumatic Stress Disorder Scale.

Konstantinos Kontoangelos,Ioannis Katsarolis,Dimitra Kavatha,Garyfalia Poulakou,Sofia Tsiori,Vissaria Sakka,Konstantinos Protopapas,Anastasia Antoniadou,Antonios Papadopoulos,Charalambos C Papageorgiou

doi:10.4081/mi.2017.6832

Abstract

The Greek version of the Davidson Trauma Scale (DTS) was developed to respond to the need of Greek-speaking individuals. The translated questionnaire was administered to 128 HIV outpatients (aged 37.1±9.1) and 166 control patients (aged 32.4±13.4). In addition to the DTS Greek scale, subjects were assessed with two other scales useful for assessing validity. For each factor analyses two components were extracted, based on Cattell’s scree test. The two components solution accounted for 55.34% of the total variation in case of frequency variables and 61.45% in case of severity variables. The Cronbach’s alpha coefficient and Guttman split-half coefficient of the DTS scale were 0.93 and 0.88 respectively. The test-retest reliability of the Greek version of DTS scale proved to be satisfactory. Individual items had good intra-class correlation coefficients higher than 0.5, which means that all questions have high levels of external validity. The psychometric strength of interview for posttraumatic stress disorder-Greek version it’s reliable for its future use, particularly for screening subjects with possible diagnosis of posttraumatic stress disorder.

Highlights

The structured interview for posttraumatic stress disorder (PTSD) was first developed and tested with reference to Davidson Trauma Scale (DSM)-III
The scale comprises of 17 items reflecting the DSM-IV criteria for PTSD, supplemented by two measures of survival and behavior guilt.[3]
Each one of the 17 items corresponds to a DSM-IV symptom of PTSD,[6] and each symptom is rated on 5point frequency (0=not at all to 4=every day) and severity Likert scales (0=not at all distressing to 4=extremely distressing)

Summary

Introduction

The structured interview for posttraumatic stress disorder (PTSD) was first developed and tested with reference to Davidson Trauma Scale (DSM)-III. The scale comprises of 17 items reflecting the DSM-IV criteria for PTSD, supplemented by two measures of survival and behavior guilt.[3] The structured interview has served both as a symptom severity instrument and as a diagnostic tool and has been designed to evaluate symptoms of PTSD in individuals with a history of trauma.[4] Each item is rated on 0-4 scale and represents a composite of frequency, severity and fictional impairment. Subscale scores can be computed separately for frequency and severity.[5] The aim of the current study was to assess the reliability, validity and psychometric qualities of the Greek translation of the posttraumatic Stress Disorder Scale

Objectives

Methods

Results

Discussion

Conclusion