Health Services Research Unit, Istituto Dermopatico dell'Immacolata IDI-IRCCS, Rome, Italy.
J Invest Dermatol. 2013 Jan;133(1):104-9. doi: 10.1038/jid.2012.244. Epub 2012 Jul 26.
The utilization of health-related quality of life (HRQoL) questionnaires in routine clinical practice is hampered by several factors, including their length and thus the time needed to complete and score them. For this reason, growing efforts are devoted both to create short questionnaires and to shorten existing ones. The Skindex-17 is a dermatological HRQoL instrument that was derived from the Skindex-29 using Rasch analysis. It consists of 17 items instead of 29, and answers are given on a three-point scale instead of a five-point scale. The aim of this study was to compare information obtained by the Skindex-29 and the Skindex-17 in a large sample of dermatological outpatients. We compared the Skindex-29 with the Skindex-17 scores in 2,487 patients with several dermatological conditions, using intraclass correlation coefficients. The overall correlation was 0.957 for the symptoms scale and 0.940 for the psychosocial scale. The values were very similar for all diseases. The concordance between the levels of severity of the Skindex subscales in the two instruments was also very high. In conclusion, the Skindex-17 provided very similar information compared with the Skindex-29, with the advantage of being shorter and including some important psychometric properties.
在常规临床实践中，健康相关生活质量（HRQoL）问卷的使用受到多种因素的限制，包括其长度以及完成和评分所需的时间。出于这个原因，人们越来越致力于创建简短的问卷并缩短现有的问卷。Skindex-17 是一种皮肤病学 HRQoL 工具，它是通过 Rasch 分析从 Skindex-29 中衍生出来的。它由 17 个项目组成，而不是 29 个，答案是在三分制量表上给出的，而不是五分制量表。本研究的目的是比较大量皮肤科门诊患者使用 Skindex-29 和 Skindex-17 获得的信息。我们使用组内相关系数比较了 2487 例患有多种皮肤病的患者的 Skindex-29 和 Skindex-17 评分。症状量表的总体相关性为 0.957，心理社会量表的总体相关性为 0.940。所有疾病的数值非常相似。两种仪器中 Skindex 子量表严重程度水平的一致性也非常高。总之，与 Skindex-29 相比，Skindex-17 提供了非常相似的信息，其优点是更短，并包含一些重要的心理测量学特性。
