Psychometric properties of the Norwegian Impact of Event Scale-Revised in a non-clinical sample
Psychometric properties of the Norwegian Impact of Event Scale-Revised in a non-clinical sample
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DOI：
10.1080/08039480903118190
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发表时间：
2009-01-01
影响因子：
1.8
通讯作者：
Carlstedt, Berit
中科院分区：
文献类型：
--
作者：
Eid, Jarle;Larsson, Gerry;Carlstedt, Berit
背景：尽管事件影响量表被广泛用于测量创伤后应激症状，但对该量表的心理测量评估显示了不同的结果。目的：本研究的目的是提供新的经验证据，并检验挪威版IES-R的因素结构、信度和预测效度。方法：对2004年12月东南亚海啸灾难发生3周后的312名学生样本进行创伤后应激症状记录。采用结构方程模型（SEM）对已有研究的4个模型进行验证性因子分析。结果：原始的入侵、回避和高唤醒症状三因素模型在定义为斜向时表现出最佳的拟合优度指数。IES-R也显示出令人满意的可靠性。侵犯和回避的症状水平为中等，而过度唤醒得分较低，且性别差异显著。结论：综上所述，IES-R在这些非临床学生样本中显示出良好的心理测量特性，可以作为评估和随访特定创伤后PTSD症状的有用工具。
Background: Despite the widespread use of the Impact of Event Scale to measure post-traumatic stress symptoms, psychometric evaluations of the scale have revealed mixed findings. Aim: The aim of the present study is to provide new empirical evidence and examine the factor structure, reliability, and predictive validity of the Norwegian version of the IES-R. Methods: Posttraumatic stress symptoms were recorded in a student sample (n=312) 3 weeks after the Southeast Asian tsunami disaster in December 2004. Confirmatory factor analyses of the IES-R behavior items using structural equation modeling (SEM) were performed on four models from existing research. Results: The original three-factor model of intrusion, avoidance and hyperarousal symptoms exhibited the best goodness-of-fit indices when defined as oblique. The IES-R also revealed satisfactory reliability. Symptom levels of intrusion and avoidance were moderate, while hyperarousal scores were low, with a significant gender difference. Conclusion: Taken together, the IES-R revealed good psychometric properties in this nonclinical student sample and could be a useful instrument to assess and follow-up on PTSD symptoms after a certain identified trauma.