RAND Corporation, 1776 Main Street, Santa Monica, CA, United States.
RAND Corporation, Arlington, VA, United States.
J Anxiety Disord. 2019 Mar;62:26-34. doi: 10.1016/j.janxdis.2018.10.003. Epub 2018 Oct 29.
The primary purpose of this study was to examine the place of posttraumatic stress disorder (PTSD) vis-à-vis the external dimensions of general distress and physiological arousal.
Using data collected from veterans of the wars in Iraq and Afghanistan (N = 1350), latent variable covariance structure modeling was employed to compare correlations of PTSD symptom clusters and individual PTSD symptoms with general distress and physiological arousal.
Each PTSD symptom cluster, and 17 of 20 individual PTSD symptoms were more strongly associated with general distress than with physiological arousal. However, moderate to strong associations were also found between physiological arousal and both PTSD clusters and symptoms.
Findings are based on self-reported data elicited from a single sample of veterans with substantial PTSD symptoms. Replication, particularly by clinician interview, is necessary. Generalizability to other traumatized populations is unknown.
Results offer support, with caveats, for viewing PTSD as a distress disorder. Findings are not consistent with the position that PTSD is a hybrid disorder with some features reflecting hyperarousal and others indicative of general distress. Results have implications for the conceptualization and measurement of PTSD.
本研究的主要目的是考察创伤后应激障碍（PTSD）与一般困扰和生理唤醒的外部维度的关系。
使用从伊拉克和阿富汗战争退伍军人那里收集的数据（N=1350），采用潜在变量协方差结构模型比较 PTSD 症状群和个体 PTSD 症状与一般困扰和生理唤醒的相关性。
每个 PTSD 症状群和 20 个个体 PTSD 症状中的 17 个与一般困扰的相关性强于与生理唤醒的相关性。然而，生理唤醒与 PTSD 簇和症状之间也存在中度到高度的关联。
研究结果基于从具有大量 PTSD 症状的退伍军人的单一样本中得出的自我报告数据。需要进行复制，特别是通过临床访谈进行复制。对其他受创伤人群的普遍性尚不清楚。
结果在有保留的情况下为将 PTSD 视为困扰障碍提供了支持。研究结果与 PTSD 是一种混合障碍的观点不一致，该观点认为 PTSD 的某些特征反映了过度唤醒，而其他特征则表明一般困扰。研究结果对 PTSD 的概念化和测量具有启示意义。
