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Psychometric Properties of the Chinese Version of the Sarcopenia and Quality of Life, a Quality of Life Questionnaire Specific for Sarcopenia
Calcified Tissue International ( IF 3.3 ) Pub Date : 2021-05-15 , DOI: 10.1007/s00223-021-00859-8
Xiaofeng Le 1 , Yao Wei 2 , Dingjun Hao 1 , Lequn Shan 1 , Xiaoli Li 2 , Qifang Shi 3 , Ding Ding 4 , Xiang Cheng 5 , Hwee Ling Eileen Lim 6 , Bao Yi Ng 7
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A quality of life questionnaire specific to sarcopenia (SarQoL®) was successfully developed. There is a huge demand for translation and validation in Chinese. The aim of this study was to translate the SarQoL® into Chinese and investigate its psychometric properties. The translation and cross-cultural adaptation process recommended by the developers of the initial questionnaire was followed. A total of 159 participants were investigated. The translation process consists of five steps: (1) two bilinguals independently translate initial English to Chinese; (2) synthesize the two translations into one; (3) backward translations; (4) expert committee review and (5) test of the pre-final version. The validation consists of three parts: (1) validity (discriminative power, construct validity); (2) reliability (internal consistency, test–retest reliability) and (3) floor and ceiling effects. There was no difficulty in translation process. Regarding the validity, good discriminant validity {quality of life for sarcopenic subjects [35.56 (29.73–42.70)] vs. non-sarcopenic ones [73.22 (60.09–82.90)], p < 0.001} and consistent construct validity [high correlations (spearman’s r) of SarQoL® with generic Short Form-36 version 2 questionnaire (0.250 to 0.824) and EuroQoL-5-Dimension questionnaire (− 0.114 to − 0.823)] were found in SarQoL®. Regarding reliability, high internal consistency (Cronbach’s alpha coefficient was 0.867) and excellent test–retest reliability (intraclass coefficient correlation was 0.997, 95% CI 0.994–0.998) were found. No ceiling/floor effect was reflected. A valid SarQoL® questionnaire is now available for Chinese population. It can provide a better understanding of the sarcopenia disease burden and serve as a therapeutic outcome indicator in research.

更新日期:2021-05-15
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