Zhulin Xue1, Xiaowen Ma2, Xiaojing Liu1, Xing Wang1, Zili Li3. 1. Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China. 2. Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China. 3. Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China. kqlzl@sina.com.
Abstract
OBJECTIVES: The aims of this study were to describe the development of a Chinese version of the Orthognathic Quality of Life Questionnaire (OQLQ) and examine its reliability and validity. METHODS: The original English version of the OQLQ was translated into Chinese (OQLQ-C) by a forward-backward translation method. Psychometric evaluation of the OQLQ-C was carried out on a sample of 126 patients with dentofacial deformities. Reliability of the OQLQ-C was determined by means of internal consistency and test-retest methods, while validity was ascertained by content validity and construct validity. RESULTS: Internal consistency for total OQLQ-C score was 0.932 (Cronbach's alpha), and the test-retest reliability was 0.913 (Spearman correlation coefficient). Content validity of OQLQ-C was supported by content validity index (CVI) with scale-level (S-CVI) of 0.99 and item-level (I-CVI) of 0.875 to 1. The OQLQ-C was distributed to 4 different factors, and the total variance explained was 67.049%. CONCLUSIONS: The Chinese version of the OQLQ demonstrated acceptable reliability and good validity in patients with dentofacial deformities. CLINICAL RELEVANCE: These findings enable assessments of oral health-related quality of life in Chinese literate patients with dentofacial disorders. TRIAL REGISTRATION: ChiCTR1900028206.
OBJECTIVES: The aims of this study were to describe the development of a Chinese version of the Orthognathic Quality of Life Questionnaire (OQLQ) and examine its reliability and validity. METHODS: The original English version of the OQLQ was translated into Chinese (OQLQ-C) by a forward-backward translation method. Psychometric evaluation of the OQLQ-C was carried out on a sample of 126 patients with dentofacial deformities. Reliability of the OQLQ-C was determined by means of internal consistency and test-retest methods, while validity was ascertained by content validity and construct validity. RESULTS: Internal consistency for total OQLQ-C score was 0.932 (Cronbach's alpha), and the test-retest reliability was 0.913 (Spearman correlation coefficient). Content validity of OQLQ-C was supported by content validity index (CVI) with scale-level (S-CVI) of 0.99 and item-level (I-CVI) of 0.875 to 1. The OQLQ-C was distributed to 4 different factors, and the total variance explained was 67.049%. CONCLUSIONS: The Chinese version of the OQLQ demonstrated acceptable reliability and good validity in patients with dentofacial deformities. CLINICAL RELEVANCE: These findings enable assessments of oral health-related quality of life in Chinese literate patients with dentofacial disorders. TRIAL REGISTRATION: ChiCTR1900028206.
Entities:
Keywords:
Oral health-related quality of life (OHRQoL); Orthognathic Quality of Life Questionnaire (OQLQ); Quality of life (QoL); Reliability; Validity
Authors: Hazem T Al-Ahmad; Wesam S Al-Sa'di; Iyad K Al-Omari; Zaid B Al-Bitar Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod Date: 2008-08-20