Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
Depress Anxiety. 2011 Dec 21;28(12):1097-104. doi: 10.1002/da.20823. Epub 2011 Jun 16.
This study investigated an alternative five-factor diagnostic model for posttraumatic stress disorder (PTSD) symptoms, and tested external convergent and discriminant validity of the model in a young Chinese sample of earthquake survivors.
A total of 938 participants (456 women, 482 men) aged 15-20 years were recruited from a vocational school originally located in Beichuan County Town which was almost completely destroyed by the "Wenchuan Earthquake." The participants were administrated with the PTSD Checklist and the Hopkins Symptoms Checklist-25 12 months after the earthquake.
The results of confirmatory factor analysis showed that the five-factor intercorrelated model (intrusion, avoidance, numbing, dysphoric arousal, and anxious arousal) fit the data significantly better than the four-factor numbing model proposed by King et al. (1998: Psychol Assess 10:90-96) and the four-factor dysphoria model proposed by Simms et al. (2002: J Abnorm Psychol 111:637-647). Further analyses indicated that four out of five PTSD factors yielded significantly different correlations with external measures of anxiety versus depression.
The findings provide further empirical evidence in favor of the five-factor diagnostic model of PTSD, and carry implications for the upcoming DSM-5.
本研究调查了创伤后应激障碍（PTSD）症状的另一种五因素诊断模型，并在经历汶川地震的年轻中国地震幸存者样本中测试了该模型的外部收敛和判别效度。
共有 938 名参与者（456 名女性，482 名男性）年龄在 15-20 岁，来自一所原本位于北川县城的职业学校，该校几乎完全被“汶川地震”摧毁。参与者在地震发生 12 个月后接受了创伤后应激障碍检查表和霍普金斯症状检查表-25 的测试。
验证性因素分析的结果表明，五因素相互关联模型（闯入、回避、麻木、烦躁觉醒和焦虑觉醒）明显优于 King 等人（1998：心理评估 10:90-96）提出的四因素麻木模型和 Simms 等人（2002：异常心理学杂志 111:637-647）提出的四因素烦躁模型。进一步的分析表明，五个 PTSD 因素中有四个与焦虑和抑郁的外部测量指标显著相关。
这些发现为 PTSD 的五因素诊断模型提供了进一步的实证证据，并对即将出台的 DSM-5 具有启示意义。
