The Spanish version of the Insomnia Severity Index: A confirmatory factor analysis
The Spanish version of the Insomnia Severity Index: A confirmatory factor analysis
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DOI：
10.1016/j.sleep.2011.06.019
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发表时间：
2012-02-01
期刊：
影响因子：
4.8
通讯作者：
Vgontzas, Alexandros N.
中科院分区：
文献类型：
--
作者：
Fernandez-Mendoza, Julio;Rodriguez-Munoz, Alfredo;Vgontzas, Alexandros N.
目的：要检查的心理测量学特性的西班牙语版本的inflammatory严重程度指数（ISI），并确定其因素结构与验证性因素分析（CFA）。方法：自我报告的信息收集样本的500名成年人（平均年龄39.13 [标准差15.85]年）从人口的医学生和他们的社交网络。与ISI一起，测量失眠的主观严重程度，受试者完成了艾斯伯格睡眠质量指数，埃普沃思嗜睡量表和情绪状态的轮廓，以研究ISI的同时有效性。CFA被用来测试替代模型，以确定的因子结构的ISI.Results：西班牙语版的ISI显示足够的内部一致性指数（克朗巴赫的α = 0.82）。验证性因素分析表明，三因素结构比单因素和双因素结构更适合数据。ISI与睡眠质量差，疲劳，焦虑和抑郁显着相关，区分良好和较差的sleepers.Conclusions：ISI是一个可靠的和有效的工具，以评估在西班牙语人群失眠的主观严重程度。其三要素结构（即，夜间睡眠困难、睡眠不满意和失眠的日间影响）使其成为心理测量学上稳健和临床上有用的测量。(C)2011 Elsevier B.V.保留所有权利。
Objective: To examine the psychometric properties of the Spanish version of the Insomnia Severity Index (ISI) and to determine its factor structure with confirmatory factor analysis (CFA).Methods: Self-reported information was collected from a sample of 500 adults (mean age 39.13 [standard deviation 15.85] years) drawn from a population of medical students and their social networks. Together with the ISI, a measure of the subjective severity of insomnia, subjects completed the Pittsburg Sleep Quality Index, the Epworth Sleepiness Scale, and the Profile of Mood States to study concurrent validity of the ISI. CFA was used to test alternative models to ascertain the factorial structure of the ISI.Results: The Spanish version of the ISI showed adequate indices of internal consistency (Cronbach's alpha = 0.82). CFA showed that a three-factor structure provided a better fit to the data than one-factor and two-factor structures. The ISI was significantly correlated with poor sleep quality, fatigue, anxiety, and depression, and discriminated between good and poor sleepers.Conclusions: The ISI is a reliable and valid instrument to assess the subjective severity of insomnia in Spanish-speaking populations. Its three-factor structure (i.e., night-time sleep difficulties, sleep dissatisfaction and daytime impact of insomnia) makes it a psychometrically robust and clinically useful measure. (C) 2011 Elsevier B.V. All rights reserved.