创伤后应激障碍的潜在因素结构
Latent Factor Structure of Posttraumatic Stress Disorder.
作者信息
Gentes Emily, Dennis Paul A, Kimbrel Nathan A, Kirby Angela C, Hair Lauren P, Beckham Jean C, Calhoun Patrick S
机构信息
Durham Veterans Affairs Medical Center; Durham, NC, USA ; The VA Mid-Atlantic Mental Illness Research, Education, and Clinical Center; Durham, NC, USA.
Durham Veterans Affairs Medical Center; Durham, NC, USA ; VA Center for Health Services Research in Primary Care; Durham, NC, USA.
出版信息
Psychopathol Rev. 2015;2(1):17-29. doi: 10.5127/pr.035914.
The current study examined the latent factor structure of posttraumatic stress disorder (PTSD) based on criteria in a sample of participants ( = 374) recruited for studies on trauma and health. Confirmatory factor analyses (CFA) were used to compare the fit of the previous 3-factor model of PTSD to the 4-factor model specified in as well as to a competing 4-factor "dysphoria" model (Simms, Watson, & Doebbeling, 2002) and a 5-factor (Elhai et al., 2011) model of PTSD. Results indicated that the Elhai 5-factor model (re-experiencing, active avoidance, emotional numbing, dysphoric arousal, anxious arousal) provided the best fit to the data, although substantial support was demonstrated for the 4-factor model. Low factor loadings were noted for two of the symptoms in the model (psychogenic amnesia and reckless/self-destructive behavior), which raises questions regarding the adequacy of fit of these symptoms with other core features of the disorder. Overall, the findings from the present research suggest the model of PTSD is a significant improvement over the previous model of PTSD.
本研究基于创伤与健康研究招募的参与者样本（n = 374）中的标准，检验了创伤后应激障碍（PTSD）的潜在因子结构。采用验证性因子分析（CFA）将先前的PTSD三因子模型与[某文献]中指定的四因子模型、竞争性的四因子“烦躁不安”模型（西姆斯、沃森和德布林，2002年）以及PTSD的五因子模型（埃尔海伊等人，2011年）的拟合度进行比较。结果表明，埃尔海伊五因子模型（重新体验、主动回避、情感麻木、烦躁不安性觉醒、焦虑性觉醒）对数据的拟合度最佳，尽管四因子模型也得到了大量支持。在[某模型]中的两个症状（心因性遗忘和鲁莽/自我毁灭行为）的因子载荷较低，这引发了关于这些症状与该障碍其他核心特征拟合度是否充分的问题。总体而言，本研究结果表明，PTSD的[某模型]比先前的PTSD模型有显著改进。
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