Traduction et adaptation culturelle en français d’un indicateur de qualité de vie liée aux dysmorphoses orthodontiques : le PIDAQ

Abstract

The Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) is a tool developed and validated to specifically assess subject's quality of life related to orthodontic anomalies. The aims of the present study were to translate and culturally adapt the PIDAQ's native English version into French, and to test the psychometric characteristics of the version thereby obtained. Toward these ends, the PIDAQ's original English version was translated into French and back-translated into English following the prescribed guidelines. Each of the versions obtained from the translation process was further subjected to a committee review. The final French version which is named QIPEO underwent an analysis of psychometric properties on a sample of 42 subjects (33 females and 9 males, aged 24.60 ± 8.66 years). Internal consistency was good with Cronbach ff coefficients ranging from 0.67 for "aesthetic concerns" to 0.87 for "social impact". The reproducibility of the responses given by 14 subjects after 15 days interval was correct with intraclass coefficients ranging from 0.72 for "social impact" to 0.90 for "aesthetic concerns". Furthermore, the different subscales of the French version of the PIDAQ showed excellent correlation with the perception of aesthetics and fairly good correlation with self-perception of orthodontic treatment need. Definite need for orthodontic treatment, as assessed normatively by the IOTN, was significantly associated with lower scores of "self-confidence" and higher scores of "social impact", "psychological impact" and "aesthetic concerns". Overall, the French version of the PIDAQ was shown to be reliable and has some validity for use in this population. Further studies including a larger sample size is recommended to reassess the validation and the responsiveness of this French version.