• Shiqi Cao, Rong Zhou, Hongbo Zhou, Yi Chen, Hongpeng Cui, Zhengcao Lu, Qirong Qian, and Yu Ding.
• Department of Rehabilitation, Minimally Invasive Spine Center, 6th Medical Center, PLA General Hospital, No. 6, Fucheng Road, Haidian District, Beijing, 100048, People's Republic of China. sq_cao@126.com.
• Clin. Rheumatol. 2019 Nov 1; 38 (11): 3281-3287.

ObjectiveTo translate and cross-culturally adapt Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) Questionnaire into a Simplified Chinese version (QuickDASH-C), and evaluate the reliability and validity of the QuickDASH-C in patients with upper limb disorders.MethodsCross-cultural adaptation was performed according to the internationally recognized guidelines of American Academy of Orthopedic Surgeons Outcome Committee. A total of 150 participants were recruited in this study. Internal consistency was estimated using Cronbach's alpha. Intra-class correlation coefficient (ICC) was used to determine test-retest reliability. Construct validity was analyzed by evaluating the correlations between QuickDASH-C and Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire and visual analogue scale (VAS) as well as the short form (36) health survey (SF-36).ResultsThe original version of the QuickDASH was well cross-culturally adapted and translated into Simplified Chinese. QuickDASH-C was indicated to have excellent reliability (Cronbach's alpha = 0.818, ICC = 0.907). QuickDASH-C correlated almost perfectly to DASH (r = 0.820, p < 0.001). Moderate to substantial correlations between QuickDASH-C and VAS (r = 0.463, p < 0.001), as well as physical function (r = - 0.630, p < 0.001), role physical (r = - 0.471, p < 0.001), bodily pain (r = - 0.563, p < 0.001) and general health (r = - 0.414, p < 0.001) subscales of SF-36, were observed.ConclusionQuickDASH-C was demonstrated to have excellent acceptability, reliability, and validity in patients with upper limb disorders, which could be recommended for patients in mainland China.Key Points• This study translated and cross-culturally adapted Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) questionnaire into a Simplified Chinese version. • The reliability and validity of Simplified Chinese version of QuickDASH were good in evaluating patients with upper limb disorders.

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