Validation of the Chinese version of the Malocclusion Impact Questionnaire (MIQ)
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ORIGINAL ARTICLE
Validation of the Chinese version of the Malocclusion Impact Questionnaire (MIQ) Meng-ying Li 1,2,3 & Song-lin He 1,2,3
&
Jin-hua Wang 1,2,3
Received: 9 March 2020 / Accepted: 1 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Objective To translate and cross-culturally adapt the Malocclusion Impact Questionnaire (MIQ) into Chinese and to assess the psychometric properties of the Chinese version of the MIQ (MIQ/C) for use among adolescents with malocclusion in China. Materials and method First, the MIQ/C was developed according to international guidelines. Then, the MIQ/C was filled out by 536 adolescents between 10 and 16 years of age. This study used exploratory factor analysis (EFA), confirmatory factor analysis (CFA), convergent validity, internal consistency, and test-retest reliability to evaluate the psychometric properties of the MIQ/C. Results Following EFA, three domains were extracted, accounting for 65.950% of the total variance. The CFA results showed that the fit indices of each factor in the three-factor model all reached the standard (chi-square/DF = 2.591, GFI = 0.919, TLI = 0.926, CFI = 0.928, RMSEA = 0.076). The scale evidenced a good relationship with the two global questions, indicating good convergent validity. The Cronbach alpha value and the intraclass correlation coefficients (ICC) value of the MIQ/C were 0.929 and 0.893, respectively. Conclusion The MIQ/C demonstrated good reliability and validity and can be further studied and applied in Chinese adolescents with malocclusion. Clinical relevance The MIQ/C can be applied to assess the psychosocial impact of malocclusion among Chinese adolescents. Keywords Reliability . Validity . Malocclusion . MIQ
Introduction As the medical model has changed from the biomedical model to the biopsychosocial model, the doctor-patient relationship Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00784-020-03565-1) contains supplementary material, which is available to authorized users. * Song-lin He [email protected] * Jin-hua Wang [email protected] Meng-ying Li [email protected] 1
College of Stomatology, Chongqing Medical University, No. 7 Shangqingsi Road, Chongqing 400015, China
2
Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
3
Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
has changed from disease-centered to patient-centered, and the mental health problems of malocclusion patients have received increasing attention from orthodontists [1, 2]. Orthodontists must not only correct patients’ dentomaxillofacial and craniofacial malformations but also provide psychological interventions and consider physical and mental health as the highest goal of orthodontic treatment to achieve a more satisfactory therapeutic effect [3]. Therefore, the oral health-related quality of life (OHRQoL) of children with malocclusion has been attracting increasing at
