VA Boston Healthcare System, Boston, MA 02130, USA.
Behav Modif. 2012 Nov;36(6):857-74. doi: 10.1177/0145445512450908. Epub 2012 Jul 13.
The authors examined heterogeneity in posttraumatic stress disorder (PTSD) symptom presentation among veterans (n = 335) participating in the clinical interview subsample of the National Vietnam Veterans Readjustment Study. Latent class analysis was used to identify clinically homogeneous subgroups of Vietnam War combat veterans. Consistent with previous research, three classes emerged from the analysis, namely, veterans with no disturbance (61.4% of the cohort), intermediate disturbance (25.6%), and pervasive disturbance (12.5%). The authors also examined physical injury, war-zone stressor exposure, peritraumatic dissociation, and general dissociation as predictors of class membership. The findings are discussed in the context of recent conceptual frameworks that posit a range of posttraumatic outcomes and highlight the sizable segment of military veterans who suffer from intermediate (subclinical) PTSD symptoms.
作者研究了参加国家越南退伍军人适应研究临床访谈子样本的退伍军人（n=335）中创伤后应激障碍（PTSD）症状表现的异质性。潜在类别分析用于确定越南战争参战退伍军人的临床同质亚组。与先前的研究一致，分析中出现了三个类别，即无干扰的退伍军人（队列的 61.4%）、中等干扰（25.6%）和普遍干扰（12.5%）。作者还检查了身体伤害、战区应激源暴露、创伤前解离和一般解离作为类别成员的预测因素。这些发现是在最近的概念框架的背景下讨论的，这些框架提出了一系列创伤后结果，并强调了相当一部分患有中度（亚临床）创伤后应激障碍症状的退伍军人。
