Psychometric Properties of the UCLA PTSD Reaction Index. Part II: Investigating Factor Structure Findings in a National Clinic-Referred Youth Sample
Psychometric Properties of the UCLA PTSD Reaction Index. Part II: Investigating Factor Structure Findings in a National Clinic-Referred Youth Sample
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DOI：
10.1002/jts.21755
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发表时间：
2013-02-01
影响因子：
3.3
通讯作者：
Pynoos, Robert S.
中科院分区：
文献类型：
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作者：
Elhai, Jon D.;Layne, Christopher M.;Pynoos, Robert S.
我们使用来自6，591名暴露于创伤的儿童/青少年的数据，检查了UCLA PTSD反应指数（PTSD-RI）的潜在因素结构，这些儿童/青少年在54个国家儿童创伤应激网络（NCTSN）中心接受治疗。使用验证性因素分析，我们测试了3因素DSM-IV PTSD模型，2个单独的4因素模型（Dysophoria与情绪麻木）和最近概念化的5因素Dysophoric Arousal模型。我们发现，在PTSD-RI上，Dycororiamodel比情绪麻木模型有轻微但显著的优势，贝叶斯信息标准（BIC）值的差异为81分。与最近几项针对成人创伤受害者的研究一样，我们发现，在PTSD-RI上，焦虑性唤醒模型比其他模型稍有优势，BIC差异超过300分。保留焦虑唤醒模型，我们测试了PTSD-RI因素对儿童创伤症状自评量表的子量表的收敛效度。支持聚合效度的PTSD-RI，在焦虑唤醒模型中，焦虑唤醒因子与愤怒相关最强，而情感麻木因子与抑郁相关最强，焦虑唤醒因子与焦虑相关最强。结果支持使用PTSD-RI评估青年PTSD。
We examined the underlying factor structure of the UCLA PTSD Reaction Index (PTSD-RI) using data from 6,591 children/adolescents exposed to trauma, presenting for treatment at any of 54 National Child Traumatic Stress Network (NCTSN) centers. Using confirmatory factor analysis, we tested the 3-factor DSM-IV PTSD model, 2 separate 4-factor models (Dysphoria vs. Emotional Numbing) and a recently conceptualized 5-factor Dysphoric Arousal model. We found a slight, but significant advantage for the Dysphoriamodel over the Emotional Numbing model on the PTSD-RI, with a difference in Bayesian information criterion (BIC) values of 81 points. As with several recent studies of adult trauma victims, we found a slight advantage for the Dysphoric Arousal model over the other models on the PTSD-RI, with BIC differences exceeding 300 points. Retaining the Dysphoric Arousal model, we tested the convergent validity of the PTSD-RI factors against subscales of the Trauma Symptom Checklist for Children. Supporting the convergent validity of the PTSD-RI, in the Dysphoric Arousal model, the dysphoric arousal factor related most strongly to anger, whereas the emotional numbing factor related most strongly to depression, and anxious arousal factor related most strongly to anxiety. Results support the use of the PTSD-RI for evaluating PTSD among youth.