• J. Oral Maxillofac. Surg. · Oct 2013

    Psychometric properties of the Brazilian version of the Orthognathic Quality of Life Questionnaire.

    • Eveline Coutinho Baldoto Gava, MiguelJosé Augusto MendesJA, Adriana Monteiro de Araújo, and Branca Heloisa de Oliveira.
    • Master in Orthodontics, Department of Orthodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil. Electronic address: evelinegava@gmail.com.
    • J. Oral Maxillofac. Surg. 2013 Oct 1; 71 (10): 1762.e1-8.

    PurposeTo assess the construct validity and reliability of the Brazilian version of the Orthognathic Quality of Life Questionnaire (B-OQLQ).Materials And MethodsA cross-sectional study was performed, and 101 patients in need of orthodontic-surgical treatment were recruited at a public hospital (Hospital Universitário Pedro Ernesto) and a public dental school (Faculdade de Odontologia da Universidade do Estado do Rio de Janeiro). The B-OQLQ was self-completed. The mean age of the participants was 26.51 ± 9.25 years, and most were female (58.42%; n = 59). The construct validity was assessed using Spearman's correlation coefficient between the B-OQLQ and the Oral Health Impact Profile (OHIP-14) scores and between the B-OQLQ and subjective health indicators' scores. The reliability was assessed in terms of internal consistency and stability (test-retest) using Cronbach's alpha and the intraclass correlation coefficient (ICC), respectively.ResultsSignificant correlations were found between the B-OQLQ scores and the following: OHIP-14 total score (rs = 0.70, P < .001), perception of oral health (rs = -0.24, P = .02), single-item evaluation of quality of life (rs = -0.29, P = .03), satisfaction with physical appearance (rs = -0.40, P < .001), and satisfaction with facial appearance (rs = -0.39, P = .0001). Cronbach's alpha and the ICC was 0.95 and 0.90, respectively. The domains of B-OQLQ causing the most effect on the quality of life included "social aspects of deformity" (13.0 ± 10.54) and "facial aesthetics" (11.81 ± 6.23).ConclusionsThe Brazilian version of the OQLQ was shown to be valid and reliable with good psychometric properties and might thus be considered an appropriate tool to assess the effect of dentofacial deformities on the quality of life of individuals with this condition.Copyright © 2013 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.

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