title: Preliminary validation of the Brazilian version of the Child Perceptions Questionnaire 8-10.
abstract: OBJECTIVE
  The aim of the study was to perform a preliminary validation of the Brazilian version of the Child Perceptions Questionnaire 8-10 (CPQ 8-10).
  
  
  METHODS
  The sample used to test the measurement equivalence was made up of 59 children from 8 to 10 years of age at the Federal University of Minas Gerais, Brazil. The CPQ 8-10 was administered, and clinical exams were performed by a single examiner, calibrated for the diagnosis of dental caries (Kappa= 0.98) and malocclusion (weighted Kappa and intraclass correlation coefficient = 0.66-1.00). The children were divided into three groups according to their clinical condition (22 with cavitated carious lesions; 20 with malocclusion; 17 with both oral conditions).
  
  
  METHODS
  The internal consistency of the instrument was assessed by Cronbach's alpha Coefficient. The Intraclass correlation coefficient (ICC) was used for the test-retest reliability (40 children). Discriminant validity was determined using the Kruskal-Wallis test.
  
  
  RESULTS
  An assessment of the psychometric properties revealed the instrument to be reliable (Cronbach's alpha=0.92 for the total scale and 0.63-0.85 for the subscales), exhibiting excellent stability (ICC=0.96 for the total scale and 0.79-0.95 for the subscales). Construct validity was demonstrated through the significant correlations between the global indicators and subscales. There were statistically significant differences between the clinical groups regarding the total scale, thereby demonstrating discriminant validity (p=0.03).
  
  
  CONCLUSIONS
  The preliminary validation of the Brazilian version of the CPQ 8-10 showed valid and reliable for use on Brazilian children.
authors.affiliation: Department of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.
authors.forename: M T
authors.initials: MT
authors.lastname: Martins
authors.forename: F M
authors.initials: FM
authors.lastname: Ferreira
authors.forename: A C
authors.initials: AC
authors.lastname: Oliveira
authors.forename: S M
authors.initials: SM
authors.lastname: Paiva
authors.forename: M P
authors.initials: MP
authors.lastname: Vale
authors.forename: P J
authors.initials: PJ
authors.lastname: Allison
authors.forename: I A
authors.initials: IA
authors.lastname: Pordeus
mesh_terms: D001294:Attitude to Health; D001938:Brazil; D002648:Child; D003431:Cross-Cultural Comparison; D003753:Dental Health Surveys; D005260:Female; D006801:Humans; D008297:Male; D009909:Oral Health; D011594:Psychometrics / Q000379:methods*; D011788:Quality of Life / Q000523:psychology*; D015203:Reproducibility of Results; D012647:Self-Assessment; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires