Madarasingha N P, de Silva P, Satgurunathan K
Dermatology Unit, National Hospital of Sri Lanka.
Ceylon Med J. 2011 Mar;56(1):18-22. doi: 10.4038/cmj.v56i1.2890.
The effect of dermatological disease on patients' quality of life is a minimally addressed issue in Sri Lanka. One reason is the unavailability of a standardised measuring tool. This study was done to produce and validate a Sinhala version of the Dermatology Life Quality Index (DLQI), which is an internationally accepted quality of life measuring instrument.
The English version of the DLQI was translated according to standard procedures and the translated version was validated among 200 outpatients attending the dermatology clinics at the National Hospital of Sri Lanka and 30 healthy volunteers. The SF-36 was administered simultaneously to a random subsample of 125 participants to test for criterion validity. Intemal consistency and the test-retest reliability were assessed separately for the translated DLQI.
The Sinhala version of DLQI takes 3-5 minutes to be completed on average and had no confusing, embarrassing or difficult to answer questions. Except for personal relationship domain (0.442) all other domains demonstrated high Cronbach's alpha values suggesting satisfactory internal consistency within the domains. The DLQI demonstrated good test-retest reliability with all Kappa values above 0.83. In comparison with the relevant domains of the SF-36, the DLQI demonstrated greater than 0.4 (Pearson r) suggesting an acceptable criterion validity. The Sinhala version of the DLQI appears to discriminate well between disease status and disease severity (F = 31.09, p < 0.001, n = 240).
The DLQI (Sinhala) version is a simple, acceptable and reliable tool to measure the effect of dermatological diseases on quality of life.
在斯里兰卡，皮肤病对患者生活质量的影响是一个极少被关注的问题。原因之一是缺乏标准化的测量工具。本研究旨在编制并验证一份僧伽罗语版的皮肤病生活质量指数（DLQI），这是一种国际公认的生活质量测量工具。
按照标准程序翻译DLQI的英文版，并在斯里兰卡国家医院皮肤科门诊的200名门诊患者和30名健康志愿者中对翻译后的版本进行验证。同时对125名参与者的随机子样本进行SF - 36测评，以检验效标效度。分别对翻译后的DLQI评估内部一致性和重测信度。
僧伽罗语版DLQI平均需要3 - 5分钟完成，且没有令人困惑、尴尬或难以回答的问题。除人际关系领域（0.442）外，所有其他领域的Cronbach's alpha值都很高，表明各领域内部一致性良好。DLQI的重测信度良好，所有Kappa值均高于0.83。与SF - 36的相关领域相比，DLQI的相关性大于0.4（Pearson r），表明效标效度可接受。僧伽罗语版DLQI似乎能很好地区分疾病状态和疾病严重程度（F = 31.09，p < 0.001，n = 240）。
DLQI（僧伽罗语版）是一种简单、可接受且可靠的工具，用于测量皮肤病对生活质量的影响。
