Australian Centre for Posttraumatic Mental Health and Department of Psychiatry, University of Melbourne, Victoria, Australia.
J Trauma Stress. 2010 Jun;23(3):340-9. doi: 10.1002/jts.20526.
Using latent class analysis (LCA) the typology of personality profiles of veterans with posttraumatic stress disorder (PTSD) was examined based on internalizing/externalizing dimensions of psychopathology. Latent class analysis on Minnesota Multiphasic Personality Inventory-2 (MMPI-2) Personality Psychopathology-5 (PSY-5) scale data from 299 Australian combat veterans with PTSD supported the model, identifying an optimal 4-class solution, with PTSD externalizing class defined by aggressiveness and disconstraint, high and moderate internalizing classes differentiated on the extent of elevations in introversion and negative emotionality and elevation of psychoticism in the high internalizing class and a simple PTSD class with normal range scores. The model was validated using external self-report and psychiatric-interview-derived diagnoses. A second exploratory LCA using broader comorbidity indicators (MMPI-2 Restructured Clinical scales) demonstrated some support for, although limitations in, using nonpersonality measures to identify these classes directly.
采用潜在类别分析（LCA），根据精神病理学的内化/外化维度，研究了创伤后应激障碍（PTSD）退伍军人的人格特征类型。对 299 名澳大利亚 PTSD 退伍军人的明尼苏达多相人格测验-2（MMPI-2）人格病理-5（PSY-5）量表数据进行潜在类别分析，支持了该模型，确定了一个最佳的 4 类解决方案，PTSD 外化类由攻击性和放纵性定义，高和中度内化类则根据内向性和负性情绪的程度以及高内化类的精神病性升高来区分，简单 PTSD 类则具有正常范围的分数。该模型使用外部自我报告和精神病学访谈得出的诊断进行了验证。使用更广泛的共病指标（MMPI-2 重构临床量表）进行的第二次探索性 LCA 表明，尽管存在一些限制，但可以使用非人格测量来直接识别这些类别。
