title: RELIABILITY, VALIDITY, AND PSYCHOMETRIC PROPERTIES OF THE GREEK TRANSLATION OF THE CAMBRIDGE DEPERSONALIZATION SCALE (CDS).
abstract: BACKGROUND
  The Cambridge Depersonalisation Scale is meant to capture the frequency and duration of depersonalisation symptoms over the 'last 6 months'.
  
  
  METHODS
  In order to develop a Greek version of CDS scale, the CDS scale was translated in Greek by 2 psychiatrists. Then, the Greek version of CDS scale was back-translated by a person who did not knew the original English version. The back-translated version was reviewed in order to establish whether is consistent with the original English version. After this procedure we administered the Greek version of CDS scale to a sample of 294 Greeks in order to assess the reliability and the validity of the Greek version of scale.
  
  
  RESULTS
  The five components solution accounted for 58.204% of the total variation. Initial eigenvalues of the five components were: factor 1=11.555, factor 2=1.564, factor 3=1.356, factor 4=1.247 and factor 5=1.157. Six items did not load on any factor. Correlations between factors were low ranged from 0.134 to 0.314 and no complex variables were found. Cronbach's alpha and Guttman split-half coefficient were used to evaluate interval consistency of CDS scale in 294 individuals. The alpha coefficients and Guttman split-half coefficient of the CDS scale were 0.938 and 0.921, respectively. The test-retest reliability proved to be satisfactory. The intraclass correlation coefficients for the total CDS score was very good and equal to 0,883. The CDS scale correlated highly with the SCL-90 and all subscales (p-value<0.0001).
  
  
  CONCLUSIONS
  The psychometric strength of CDS - Greek its reliable for its future use, particularly for screening for subjects with possible diagnosis of CDS.
authors.affiliation: Department of Psychiatry, Eginition Hospital, School of Medicine, University of Athens, Athens, Greece; University Mental Health Research Institute, Athens Greece.
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Kontoangelos
authors.affiliation: Department of Psychiatry, Eginition Hospital, School of Medicine, University of Athens, Athens, Greece.
authors.forename: Sofia
authors.initials: S
authors.lastname: Tsiori
authors.affiliation: 4th Department of Internal Medicine, University Hospital « Attikon », Athens, Greece.
authors.forename: Garyfalia
authors.initials: G
authors.lastname: Poulakou
authors.affiliation: 4th Department of Internal Medicine, University Hospital « Attikon », Athens, Greece.
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Protopapas
authors.affiliation: 4th Department of Internal Medicine, University Hospital « Attikon », Athens, Greece.
authors.forename: Ioannis
authors.initials: I
authors.lastname: Katsarolis
authors.affiliation: 4th Department of Internal Medicine, University Hospital « Attikon », Athens, Greece.
authors.forename: Vissaria
authors.initials: V
authors.lastname: Sakka
authors.affiliation: 4th Department of Internal Medicine, University Hospital « Attikon », Athens, Greece.
authors.forename: Dimitra
authors.initials: D
authors.lastname: Kavatha
authors.affiliation: 4th Department of Internal Medicine, University Hospital « Attikon », Athens, Greece.
authors.forename: Antonios
authors.initials: A
authors.lastname: Papadopoulos
authors.affiliation: 4th Department of Internal Medicine, University Hospital « Attikon », Athens, Greece.
authors.forename: Anastasia
authors.initials: A
authors.lastname: Antoniadou
authors.affiliation: Department of Psychiatry, Eginition Hospital, School of Medicine, University of Athens, Athens, Greece; University Mental Health Research Institute, Athens Greece.
authors.forename: Charalambos C
authors.initials: CC
authors.lastname: Papageorgiou
keywords: CDS; Cambridge depersonalization Scale; HIV; depersonalization; reliability; validity