Psychometric Properties of the UCLA PTSD Reaction Index: Part I

Authors

  • Alan M. Steinberg,

    1. Department of Psychiatry and Biobehavioral Sciences, UCLA/Duke University National Center for Child Traumatic Stress, University of California, Los Angeles, California, USA
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  • Melissa J. Brymer,

    1. Department of Psychiatry and Biobehavioral Sciences, UCLA/Duke University National Center for Child Traumatic Stress, University of California, Los Angeles, California, USA
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  • Soeun Kim,

    1. Department of Biostatistics, UCLA/Duke University National Center for Child Traumatic Stress, University of California, Los Angeles, California, USA
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  • Ernestine C. Briggs,

    1. Department of Psychiatry, UCLA/Duke University National Center for Child Traumatic Stress Duke University Medical Center, Durham, North Carolina, USA
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  • Chandra Ghosh Ippen,

    1. Department of Psychiatry, Child Trauma Research Program, University of California, San Francisco, California, USA
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  • Sarah A. Ostrowski,

    1. NeuroDevelopmental Science Center, Akron Children's Hospital Akron, Ohio, USA
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  • Kevin J. Gully,

    Corresponding author
    • Primary Children's Medical Center, Salt Lake City, Utah, USA
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  • Robert S. Pynoos

    1. Department of Psychiatry and Biobehavioral Sciences, UCLA/Duke University National Center for Child Traumatic Stress, University of California, Los Angeles, California, USA
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  • *Kevin J. Gully died February 16, 2010.

  • The work described in this study is funded through the Center for Mental Health Services (CMHS), Substance Abuse and Mental Health Services Administration (SAMHSA), U.S. Department of Health and Human Services (USDHHS) through a cooperative agreement (3U79SM054284-10S1) with the UCLA/Duke University National Center for Child Traumatic Stress. The views, policies, and opinions expressed are those of the authors and do not necessarily reflect those of CMHS, SAMHSA, or USDHHS. We would like to acknowledge the 54 centers within the NCTSN that have contributed data to the Core Data Set as well as the staff, children, youth, and families at NCTSN centers throughout the United States that have made this collaborative network possible. We also thank our colleagues and partners at CMHS/SAMHSA for their leadership and guidance.

Correspondence concerning this article should be addressed to Melissa J. Brymer, UCLA/Duke University National Center for Child Traumatic Stress, 11150 West Olympic Boulevard, Suite 650, Los Angeles, CA 90064. E-mail: mbrymer@mednet.ucla.edu

Abstract

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.

Traditional and Simplified Chinese Abstracts by AsianSTSS

標題:UCLA PTSD反應指數的心理測量特徵:第一部份

撮要:全國兒童創傷壓力網絡中心求助的青少年和兒童人的大型樣本(=6291)會被評估,而本文則報告其中DSM IV的UCLA PTSD反應指數(PTSD-RI)的心理測量特徵。總平均PTSD-RI分數看來,女性比男性有統計上顯着較高分數;而且年紀相關的差別亦展示出來,在同一性別組別內7-9歲和16-18歲有較大差別;至於種族組別未見有任何顯着差別。PTSD-RI總量表在不同年齡層、性別和種族中有極好的內在一致性信賴度(α=.88至.91)。TSCC-A內PTSD-RI分數與PTS子副量表分數的相關關係,在整個樣本中和相同性別、年齡和種族組別中,都有聚合有效性,但郤沒有分辨有效性。與前述4-因子模型不同,探索性因子分析顯示3因子已能最有效反映PTSD在DSM IV的內在量度。PTSD-RI分數和功能/行為問題的高優勢比有相連(OR=1至1.80)。樣本中創傷經歷、年齡和種族有廣闊覆蓋面,而本硏究發現是矚目的。

标题:UCLA PTSD反应指数的心理测量特征:第一部份

撮要:全国儿童创伤压力网络中心求助的青少年和儿童人的大型样本(=6291)会被评估,而本文则报告其中DSM IV的UCLA PTSD反应指数(PTSD-RI)的心理测量特征。从总平均PTSD-RI分数看来,女性比男性有统计上显着较高分数;而且年纪相关的差别亦展示出来,在同一性别组别内7-9岁和16-18岁有较大差别;至于种族组别未见有任何显着差别。PTSD-RI总量表在不同年龄层、性别和种族中有极好的内在一致性信赖度(α=.88至.91)。TSCC-A内PTSD-RI分数与PTS子副量表分数的相关关系,在整个样本中和相同性别、年龄和种族组别中,都有聚合有效性,但郄没有分辨有效性。与前述4-因子模型不同,探索性因子分析显示3因子已能最有效反映PTSD在DSM IV的内在量度。PTSD-RI分数和功能/行为问题的高优势比有相连(OR=1至1.80)。样本中创伤经历、年龄和种族有广阔覆盖面,而本硏究发现是瞩目的。

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