Orthognathic Relevant Scales of FACE-Q: Translation and Validation for Hong Kong Chinese Patients

Background: A validated questionnaire is needed to study a more holistic outcome assessment including postsurgical aesthetic satisfaction and psychosocial changes in orthognathic patients. The aim of this study was to determine the reliability and validity of 9 orthognathically relevant translated FACE-Q scales among Hong Kong Chinese orthognathic patients. Methods: Two hundred fifty adult Cantonese-speaking patients of 18 years or older who underwent orthognathic treatment were recruited in the Prince Philip Dental Hospital of Hong Kong. Nine of an overall of 40 independent FACE-Q scales were selected and translated into Hong Kong Chinese. The reliability, validity, and test–retest reliability were examined using Cronbach's alpha, paired t test and Pearson's correlation coefficients. Results: The Hong Kong Chinese version of the 9 FACE-Q scales was obtained by forward-backward translation. One hundred eight male (mean age, 25.57 ± 4.49) and 142 female (mean age, 24.61 ± 4.54) patients were recruited for the reliability and validation process. The internal consistency (0.89–0.97) and the test–retest reliability (0.73–0.90) were found to be high. The validity of the translated questionnaires was comparable with that of the original FACE-Q. Conclusion: The results presented here prove that the 9 translated FACE-Q scales are reliable and valid instruments for research and clinical purposes in Hong Kong Chinese orthognathic patients.