Shevlin Mark, McBride Orla, Armour Cherie, Adamson Gary
School of Psychology, University of Ulster Magee Campus, Northland Road, Co. Londonderry, BT48 7JL, Northern Ireland.
J Anxiety Disord. 2009 Oct;23(7):995-1001. doi: 10.1016/j.janxdis.2009.07.001. Epub 2009 Jul 7.
Much of the debate surrounding the dimensionality of PTSD relates to three specific Hyperarousal symptoms (D1-D3) and whether they are appropriate indicators of one of two broad constructs that constitute PTSD: Dysphoria or Hyperarousal. This study addressed this issue by testing a series of confirmatory factor models to determine which factor, or factors, these symptoms measured the strongest. Data from individuals who satisfied the conditions for Criterion A of the diagnostic criteria for a DSM-IV diagnosis of PTSD (n=12,467) in the 2004-2005 NESARC were used in the analysis. The results revealed that the D1-D3 symptoms were not clear indicators of either factor, but measured both Dysphoria and Hyperarousal. Two symptoms, however, loaded more highly on the Dysphoria, rather than Hyperarousal, factor. The present findings lend support to the factor model proposed by Simms et al. [Simms, L. J., Watson, D., & Doebbeling, B. N. (2002). Confirmatory factor analyses of posttraumatic stress symptoms in deployed and non-deployed veterans of the Gulf War. Journal of Abnormal Psychology, 111, 637-647] but also question the use of symptoms that are not unique indicators of specific factors.
围绕创伤后应激障碍（PTSD）维度的许多争论都与三种特定的过度警觉症状（D1 - D3）以及它们是否是构成PTSD的两个宽泛结构之一（烦躁不安或过度警觉）的恰当指标有关。本研究通过测试一系列验证性因素模型来解决这个问题，以确定这些症状最强烈测量的是哪个因素或哪些因素。分析中使用了2004 - 2005年全国酒精与相关疾病流行病学调查（NESARC）中符合DSM - IV创伤后应激障碍诊断标准A标准条件的个体数据（n = 12,467）。结果显示，D1 - D3症状并非任何一个因素的明确指标，而是同时测量了烦躁不安和过度警觉。然而，有两种症状在烦躁不安因素上的负荷更高，而非过度警觉因素。本研究结果支持了西姆斯等人提出的因素模型[西姆斯，L. J.，沃森，D.，& 德布林，B. N.（2002年）。海湾战争参战和未参战退伍军人创伤后应激症状的验证性因素分析。《变态心理学杂志》，111，637 - 647]，但也对使用并非特定因素独特指标的症状提出了质疑。
