中国科学院心理健康重点实验室知识库

目的:检验加州大学洛杉矶分校创伤后应激障碍反应指数(儿童修订版)(UCLA PTSD-RI)在灾后儿童中的效度和信度。方法:选取辽宁省抚顺市受灾地区的6所中小学(4~9年级)学生1593人[年龄8~16岁,平均(11±2)岁],将其随机分为两部分,一部分(n=796)用于探索性因素分析,另一部分(n=797)用于验证性因素分析。使用抑郁-焦虑-压力量表简版(DASS-21)评估效标效度。结果:探索性因素分析显示共有3个因子,累计可解释的方差为50%;验证性因素分析表明三因素结构各项指标拟合良好(χ~2/df=3.87,GFI=0.93,RFI=0.96,CFI=097,NNFI=0.97,IFI=0.97,RMSEA=0.06)。量表的3个维度得分与DASS-21的3个维度得分呈正相关(r=0.52~0.70,均P<0.001)。量表的内部一致性信度和分半信度分别为0.90和0.87。结论:本研究提示,加州大学洛杉矶分校创伤后应激障碍反应指数(儿童修订版)具有良好的效度和信度,可用于灾后儿童创伤后应激障碍的评估。

Objective: To test the validity and reliability of the University of California at Los Angeles Posttraumatic Stress Disorder Ｒeaction Index for DSM-IV ( Ｒevision 1，Children version) ( UCLA PTSD-ＲI) in Chinese Children after flood. Methods: On the principle of convenient sampling，the students were chosen from 6 schools in Liaoning Province where was hit by flood. Totally 1593 students ［aged 8 － 16 years，average ( 11 ± 2) years of age］completed the UCLA PTSD-ＲI. They were randomly divided into two groups for exploratory factor analysis ( n =796) and confirmatory factor analysis ( n = 797) respectively. The 21-item Depression Anxiety Stress Scale( DASS- 21) were used to evaluate the criterion validity. Ｒesults: The result of exploratory factor analysis indicated UCLA PTSD-ＲI consisted of 3 factors，accounting for 50% of the total variance. The confirmatory factor analysis identified that a three-factor model fit well ( χ2 /df = 3. 87，GFI = 0. 93，ＲFI = 0. 96，CFI = 097，NNFI = 0. 97，IFI = 0. 97，ＲMSEA = 0. 06 ) . The scores of UCLA PTSD-ＲI subscales were positively correlated with the scores of DASS-21subscales ( r = 0. 52 － 0. 70，Ps ＜ 0. 001) . The Cronbach＇ s α coefficient and the split-half reliability coefficient of UCLA PTSD-ＲI were 0. 90 and 0. 87，respectively. Conclusion: The Chinese Version of the UCLA PTSD Ｒeaction Index for DSM-IV ( Ｒevision 1，Children version) could be an effective instrument for assessing and diagnosing PTSD of Chinese children after disasters.