Department of Psychiatry and Biobehavioral Sciences, UCLA/Duke University National Center for Child Traumatic Stress, University of California, Los Angeles, CA 90064, USA.
J Trauma Stress. 2013 Feb;26(1):1-9. doi: 10.1002/jts.21780.
This article presents psychometric characteristics of the UCLA PTSD Reaction Index for DSM IV (PTSD-RI) derived from a large sample of children and adolescents (N = 6,291) evaluated at National Child Traumatic Stress Network centers. Overall mean total PTSD-RI score for girls was significantly higher as compared with boys. Age-related differences were found in that overall mean total PTSD-RI scores and within sex groups were higher among those aged 7-9 years and 16-18 years. There were no significant differences in mean total PTSD-RI scores across racial/ethnic groups. The PTSD-RI total scale displayed good to excellent internal consistency reliability across age ranges, sex, and racial/ethnic groups (α = .88-.91). Correlations of PTSD-RI scores with PTS subscale scores on the TSCC-A for the entire sample and within sex, age, and ethnic/racial groups provided evidence of convergent validity, although not discriminant validity. In contradistinction to previously reported 4-factor models, an exploratory factor analysis revealed 3 factors that mostly reflected the underlying dimensions of PTSD in DSM IV. PTSD-RI scores were associated with increased odds ratios for functional/behavior problems (odds ratio [OR] = 1-1.80). These findings are striking in light of the wide range of trauma exposures, age, and race/ethnicity among subjects.
本文介绍了从全国儿童创伤应激网络中心评估的大量儿童和青少年（N=6291）样本中得出的 DSM-IV 版 UCLA 创伤后应激障碍反应指数（PTSD-RI）的心理计量学特征。女孩的 PTSD-RI 总分均值明显高于男孩。研究发现，在年龄方面存在差异，7-9 岁和 16-18 岁的儿童和青少年的 PTSD-RI 总分均值和各性别组的总分均值较高。不同种族/民族群体的 PTSD-RI 总分均值没有显著差异。 PTSD-RI 总分量表在年龄范围、性别和种族/民族群体中具有良好到优秀的内部一致性信度（α=0.88-0.91）。 PTSD-RI 评分与 TSCC-A 中 PTS 分量表评分的相关性为整个样本以及性别、年龄和种族/民族群体提供了收敛效度的证据，尽管没有判别效度。与之前报告的 4 因素模型相反，探索性因素分析显示出 3 个主要反映 DSM-IV 中 PTSD 基本维度的因素。 PTSD-RI 评分与功能/行为问题的优势比（OR）增加相关（OR=1-1.80）。考虑到研究对象的创伤暴露范围广泛、年龄和种族/民族差异，这些发现令人震惊。
