Translation and validation of the Hindi version of the psychosocial impact of the dental aesthetics questionnaire (PIDAQ)

The validity and reliability assessment of the Hindi version of PIDAQ for application in adolescents. A cross-cultural questionnaire was translated and adapted,which was completed by 350 adolescents (aged 10 -25). The adolescents were examined by two (2) examiners who had calibrated against a gold standard and relative to each other in determining treatment needs with the Index of Orthodontic Treatment Need (IOTN) DHC and AC components as well as the Perception of Occlusion scale. Construct validity was analyzed with factor analysis and discriminant validity was checked with the Kruskal-Wallis ANOVA test Cronbach´s alpha of the translated PIDAQ ranged from 0.81 to 0.86. The 23 items of the questionnaire were divided into four domains that explained 60.5% of the variance. The test-retest reliability of the questionnaire ranged from 0.78 to 0.88. Discriminant validity revealed a significant association between the scores for the questionnaire and its subscales or domains and those for the POS, IOTN-DHC and IOTN-AC treatment need indices. Adolescents with orthodontic treatment scored higher in the questionnaires. The results in the study show that the Hindi version of PIDAQ has a very similar internal structure and psychometric properties to those of the original questionnaire and demonstrate its validity for use with Hindi (Central Indian) adolescents.