单位：[1]Department of Clinical Epidemiology, Guangzhou University of Chinese Medicine Second Affiliated Hospital,Guangzhou, China[2]Department of Aeronautical and Vehicle Engineering, KTH Royal Institute of Technology[3]Department of Neurobiology,Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden[4]Department of Dermatology, Guangzhou University of Chinese Medicine Second Affiliated Hospital,Guangzhou, China深圳市中医院深圳医学信息中心[5]Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou广东省中医院[6]Departments of Dermatology, Xinjiang Medical University Affiliated Chinese Medicine Hospital, Urumqi[7]Heilongjiang Provincial Academy of Chinese Medical Sciences, Harbin[8]Chengdu University of Traditional Chinese Medicine Affiliated Hospital, Chengdu[9]Shanghai University of Traditional Chinese Medicine Affiliated Longhua Hospital,Shanghai[10]Capital Medical University Affiliated Beijing Traditional Chinese Medicine Hospital, Beijing[11]China-Japan Friendship Hospital[12]China Academy of Chinese Medical Sciences Guanganmen Hospital, Beijing[13]Guangzhou University of Chinese Medicine First Affiliated Hospital, Guangzhou, China
The objective of this study was to examine the psychometric properties of the Chinese version of the Dermatology Life Quality Index (DLQI) and to assess the invariance of its items with respect to several patient parameters via Rasch analysis. Data were aggregated from 9,845 patients with various skin diseases across 9 hospitals in different regions of China. The response structure, local independence, and reliability of the DLQI scale were analysed in a partial credit model, and differential item functioning (DIF) across region, disease, sex, and age were assessed with a Mantel-Haenszel procedure. Although acceptable scale reliability (Person Separation Index=2.3) was obtained, several problems were revealed, including disordered response thresholds, misfitting items, DIF by geographical region and disease, and mis-targeting patients with mild impairment regarding health-related quality of life (HRQL). In conclusion, the DLQI provides inadequate information on patients' impairments in HRQL, and the application of the DLQI in Chinese patients with skin disease is limited.
基金：
National Key Technology R&D Program for the 12th Five-year Plan of Ministry of Science and Technology, ChinaNational Key Technology R&D Program [2013BAI02B03]; Financial Industry Technology Research and Development Program of Guangdong Province, China [2011(285)05]; Guangdong Science and Technology Project, China [2014A020221040, 2014B010118005]
第一作者单位：[1]Department of Clinical Epidemiology, Guangzhou University of Chinese Medicine Second Affiliated Hospital,Guangzhou, China
共同第一作者：
通讯作者：
通讯机构：[4]Department of Dermatology, Guangzhou University of Chinese Medicine Second Affiliated Hospital,Guangzhou, China[5]Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou[*1]Department of Dermatology, Guangzhou University of Chinese Medicine Second Affiliated Hospital, 111 Da De Road, Guangzhou 510120, China.
推荐引用方式(GB/T 7714)：
He Zehui,Lo Martire Riccardo,Lu Chuanjian,et al.Rasch Analysis of the Dermatology Life Quality Index Reveals Limited Application to Chinese Patients with Skin Disease[J].ACTA DERMATO-VENEREOLOGICA.2018,98(1):59-64.doi:10.2340/00015555-2742.
APA：
He, Zehui,Lo Martire, Riccardo,Lu, Chuanjian,Liu, Hongxia,Ma, Lin...&Zha, Xushan.(2018).Rasch Analysis of the Dermatology Life Quality Index Reveals Limited Application to Chinese Patients with Skin Disease.ACTA DERMATO-VENEREOLOGICA,98,(1)
MLA：
He, Zehui,et al."Rasch Analysis of the Dermatology Life Quality Index Reveals Limited Application to Chinese Patients with Skin Disease".ACTA DERMATO-VENEREOLOGICA 98..1(2018):59-64
