EUROPEAN JOURNAL OF PAEDIATRIC DENTISTRY CONTENTS.

Vol. 10 No. 3      September 2009

ISSN: 1591-996X      UBIC: 116-O

ABSTRACT: Aim The aim of the study was to perform a preliminary validation of the Brazilian version of the Child Perceptions Questionnaire 8-10 (CPQ8-10). 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 CPQ8-10 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). Statistics: 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=0.92for the total scale and 0.63-0.85for the subscales), exhibiting excellent stability (ICC=0.96for 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=O.O.3). Conclusions The preliminary validation of the Brazilian version of the CPQ8-10 showed valid and reliable for use on Brazilian children. KEYWORDS: Oral health; Quality of life; Validity; Child; Questionnaires.

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