title: Brazilian version of the Structured Interview for Disorders of Extreme Stress - Revised (SIDES-R): adaptation and validation process.
abstract: BACKGROUND
  Posttraumatic stress disorder (PTSD) contemplates the impact of acute traumatic events, but the literature indicates that this is not true for chronic exposure to stress. In this sense, the category disorders of extreme stress not otherwise specified (DESNOS) has been proposed to characterize the behavior and cognitive alterations derived from exposure to continuous early life stress. The Structured Interview for Disorders of Extreme Stress - Revised (SIDES-R) was developed to investigate and measure DESNOS. Considering the lack of instruments designed to assess DESNOS, especially in Brazil, the aim of this study was to translate, adapt, and validate the contents of SIDES-R to Brazilian Portuguese (SIDES-R-BR).
  
  
  METHODS
  The original interview was subjected to translation, back-translation, semantic equivalence and conceptual correspondence analyses by naive and specialized judges, respectively, an acceptability trial, and inter-rater validity analysis.
  
  
  RESULTS
  The interview underwent semantic and structural adaptations considering the Brazilian culture. The final version, SIDES-R-BR, showed a mean understanding score of 4.98 on a 5-point verbal rating scale, in addition to a kappa coefficient of 0.853.
  
  
  CONCLUSIONS
  SIDES-R-BR may be a useful tool in the investigation of DESNOS and contributes a valuable input to clinical research in Brazil. The availability of the instrument allows to test symptoms with adequate reliability, as verified by the kappa coefficient and translation steps.
authors.affiliation: Pontificia Universidade Catolica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Jessica
authors.initials: J
authors.lastname: Camargo
authors.affiliation: Pontificia Universidade Catolica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Bruno
authors.initials: B
authors.lastname: Kluwe-Schiavon
authors.affiliation: Pontificia Universidade Catolica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Breno
authors.initials: B
authors.lastname: Sanvicente-Vieira
authors.affiliation: Pontificia Universidade Catolica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Mateus Luz
authors.initials: ML
authors.lastname: Levandowski
authors.affiliation: PUCRS, Porto Alegre, RS, Brazil.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Grassi-Oliveira