Department of Psychology, University of Toledo, Mail Stop #948, 2801 W. Bancroft St., Toledo, OH 43606-3390, USA. www.jon-elhai.com
J Anxiety Disord. 2011 Aug;25(6):849-54. doi: 10.1016/j.janxdis.2011.04.007.
We present an update of recent literature (since 2007) exploring the factor structure of posttraumatic stress disorder (PTSD) symptom measures. Research supporting a four-factor emotional numbing model and a four-factor dysphoria model is presented, with these models fitting better than all other models examined. Variables accounting for factor structure differences are reviewed, including PTSD query instructions, type of PTSD measure, extent of trauma exposure, ethnicity, and timing of administration. Methodological and statistical limitations with recent studies are presented. Finally, a research agenda and recommendations are offered to push this research area forward, including suggestions to validate PTSD’s factors against external measures of psychopathology, test moderators of factor structure, and examine heterogeneity of symptom presentations based on factor structure examination.
我们呈现了最近（自 2007 年以来）的文献综述，探索创伤后应激障碍（PTSD）症状测量的因素结构。研究支持四因素情绪麻木模型和四因素抑郁模型，这些模型比所有其他检查的模型更合适。还审查了导致因素结构差异的变量，包括 PTSD 查询说明、PTSD 测量类型、创伤暴露程度、种族和管理时间。介绍了最近研究的方法学和统计限制。最后，提供了一个研究议程和建议，以推动该研究领域的发展，包括建议根据外部精神病理学测量、因素结构检验的调节因素以及根据因素结构检验检验症状表现的异质性来验证 PTSD 的因素。
