Laboratory for Traumatic Stress Studies, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.
Laboratory for Traumatic Stress Studies, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Academy of Psychology and Behavior, Tianjin Normal University, Tianjin, China.
J Anxiety Disord. 2017 Dec;52:88-94. doi: 10.1016/j.janxdis.2017.07.001. Epub 2017 Jul 23.
This study investigated the latent structure of DSM-5 PTSD symptoms using two-wave longitudinal data collected from a sample of adolescents exposed to an explosion accident. Two waves of surveys were conducted approximately 3 and 8 months after the accident, respectively. A total of 836 students completed the baseline survey, and 762 students completed the follow-up survey. The results of confirmatory factor analyses(CFA) indicated that a seven-factor hybrid model composed of intrusion, avoidance, negative affect, anhedonia, externalizing behaviors, anxious arousal and dysphoric arousal factors yielded significantly better data fit at both waves than the other models including the DSM-5 four-factor model, the six-factor anhedonia and externalizing behaviors models. Furthermore, the results of CFA invariance tests supported the longitudinal invariance of the model. Implications and limitations in terms of these results are discussed.
本研究使用两波纵向数据，对经历爆炸事故的青少年样本中的 DSM-5 PTSD 症状的潜在结构进行了研究。两波调查分别在事故发生后大约 3 个月和 8 个月进行。共有 836 名学生完成了基线调查，762 名学生完成了随访调查。验证性因素分析（CFA）的结果表明，在两个时间点上，由侵入、回避、负性情绪、快感缺失、外化行为、焦虑唤醒和烦躁唤醒七个因素组成的混合模型均优于其他模型，包括 DSM-5 四因素模型、六因素快感缺失和外化行为模型。此外，CFA 不变性检验结果支持模型的纵向不变性。讨论了这些结果的意义和局限性。
