title: Yale-Brown Obsessive Compulsive Scale modified for Body Dysmorphic Disorder (BDD-YBOCS): Brazilian Portuguese translation, cultural adaptation and validation.
abstract: OBJECTIVE
  To translate, culturally adapt, and validate a Brazilian Portuguese version of the Yale-Brown Obsessive Compulsive Scale modified for Body Dysmorphic Disorder (BDD-YBOCS).
  
  
  METHODS
  Ninety-three patients of both sexes seeking rhinoplasty were consecutively selected at the Plastic Surgery Outpatient Clinic of the Universidade Federal de São Paulo, Brazil, between May 2012 and March 2013. The BDD-YBOCS was translated into Brazilian Portuguese. Thirty patients participated in the cultural adaptation of the scale. The final version was tested for reliability in 20 patients, and for construct validity in 43 patients (correlation of the BDD-YBOCS with the Body Dysmorphic Disorder Examination [BDDE]).
  
  
  RESULTS
  Total Cronbach's alpha was 0.918. The BDD-YBOCS had excellent inter-rater (intra-class correlation coefficient [ICC] = 0.934; p < 0.001) and intra-rater reliability (ICC = 0.999; p < 0.001). Significant differences in BDD-YBOCS scores were found between patients with and without BDD symptoms (p < 0.001), and among patients with different levels of BDD severity (p < 0.001). A strong correlation (r = 0.781; p < 0.001) was observed between the BDDE and the BDD-YBOCS. The area under the receiver operating characteristic curve was 0.851, suggesting a very good accuracy for discriminating between presence and absence of BDD symptoms.
  
  
  CONCLUSIONS
  The Brazilian Portuguese version of the BDD-YBOCS is a reliable instrument, showing face, content and construct validity.
authors.affiliation: Division of Plastic Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Maria J
authors.initials: MJ
authors.lastname: de Brito
authors.affiliation: Division of Plastic Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Miguel
authors.initials: M
authors.lastname: Sabino Neto
authors.affiliation: Division of Plastic Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Mário F
authors.initials: MF
authors.lastname: de Oliveira
authors.affiliation: Department of Psychiatry, Universidade de São Paulo (USP), São Paulo, SP, Brazil.
authors.forename: Táki A
authors.initials: TA
authors.lastname: Cordás
authors.affiliation: Department of Psychiatry, Universidade de São Paulo (USP), São Paulo, SP, Brazil.
authors.forename: Leandro S
authors.initials: LS
authors.lastname: Duarte
authors.affiliation: Division of Plastic Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Maria F
authors.initials: MF
authors.lastname: Rosella
authors.affiliation: Division of Plastic Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Gabriel A
authors.initials: GA
authors.lastname: Felix
authors.affiliation: Division of Plastic Surgery, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
authors.forename: Lydia M
authors.initials: LM
authors.lastname: Ferreira
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D057215:Body Dysmorphic Disorders / Q000175:diagnosis*; D001828:Body Image; D001938:Brazil; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D014177:Translations; D055815:Young Adult