Psychometric properties of the Impact of Event Scale - Revised
Psychometric properties of the Impact of Event Scale - Revised
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DOI：
10.1016/j.brat.2003.07.010
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发表时间：
2003-12-01
影响因子：
4.1
通讯作者：
Failla, S
中科院分区：
文献类型：
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作者：
Creamer, M;Bell, R;Failla, S
本研究探讨了心理测量学特性的影响事件量表修订版（IES-R）在两个样本的男性越南退伍军人：寻求治疗的样本与确认创伤后应激障碍（PTSD）诊断（N = 120）和社区样本不同程度的创伤应激障碍（N = 154）。量表显示出较高的内部一致性（α = 0.96）。解释性因素分析没有提供支持的三个因素的解决方案，相应的三个分量表的侵入，回避，和过度觉醒。探索性因素分析表明，无论是一个单一的，或两个因素的解决方案（侵入/过度觉醒和回避），提供了最好的数据。然而，各分量表之间的相关性在社区样本中高于治疗样本，这表明IES-R可能对那些症状水平较低的创伤性应激反应更普遍的结构敏感。IES-R和PTSD检查表之间的相关性很高（0.84），并且发现1.5分（相当于总分33分）的截止值提供了最佳的诊断准确性。(C)2003爱思唯尔有限公司。保留所有权利。
This study investigated the psychometric properties of the Impact of Event Scale-Revised (IES-R) in two samples of male Vietnam veterans: a treatment-seeking sample with a confirmed posttraumatic stress disorder (PTSD) diagnosis (N = 120) and a community sample with varying levels of traumatic stress symptomatology (N = 154). The scale showed high internal consistency (alpha = 0.96). Confirmatory factor analysis did not provide support for a three-factor solution corresponding to the three subscales of intrusion, avoidance, and hyperarousal. Exploratory factor analysis suggested that either a single, or a two-factor solution (intrusion/hyperarousal and avoidance), provided the best account of the data. However, correlations among the subscales were higher in the community sample than in the treatment sample, suggesting that the IES-R may be sensitive to a more general construct of traumatic stress in those with lower symptom levels. The correlation between the IES-R and the PTSD Checklist was high (0.84) and a cutoff of 1.5 (equivalent to a total score of 33) was found to provide the best diagnostic accuracy. (C) 2003 Elsevier Ltd. All rights reserved.