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目的 儿童事件影响量表(The Children’s Revised Impact of Event Scale,CRIES-13)为地震后推荐使用于儿童青少年,用于创伤后应激障碍(PTSD)症状筛查的量表.在对CRIES-13(中文版)信效度研究的基础上,进行划界分的研究,以完善该量表的应用价值.方法 2008年9月下旬,根据受灾情况在2所中学选择符合入选标准的600名同学为调查对象.首先,采用一般情况调查问卷(自编)、事件影响量表(CRIES-13)进行集体施测.其次,在2所学校中根据班级采取分层随机整群抽样方法 ,由精神科医生采用K-SADS-PL对310名学生进行诊断性会谈和评估.CRIES-13划界点的划分以K-SADS-PL对PTSD的诊断为金标准,以敏感度、特异度、准确度、阳性预测值、阴性预测值为评价指标,以ROC曲线进行划界分的正确选择.结果 当量表划界分为30时,显示了高水平的灵敏度(0.833)、特异度(0.836)和阴性预测值(0.97),有较好的预测水平.结论 CRIES-13量表划界分为30时,量表对PTSD、非PTSD有很好的鉴别力,值得推广和应用.“,”Objective The Children’s Revised Impact of Event Scale (CRIES-13) is used for Screening PTSD of children. The reliability and validity of CRIES-13 is good. To research the demarcation points of CRIES-13 (Chinese version) based on the reliability and validity analysis,and to improve the useful value of the scale.Methods In late September 2008, according affected condition, students were choosed who were fit for the research standard as subjects in two middle schools. First,general questionnaire (self-writing) and CRIES-13 were applied to the subjects. Second, according to K-SADS-PL, physician carried out diagnosis meeting and evaluation to 310 students who were classified by stratified rand sampling. Critical point of CRIES-13 was divided by K-SADSPL. The assessment value of it were sensitivity, specificity, veracity, PPV, NPV. The right choice of division was measured by ROC curve. Results When the critical score was higher than 30, the score of Se ( 0. 833 ), Sp(0. 836) and NPV (0.97) was in the high level. Conclusion When the critical score is higher than 30, the scale have a good discrimination for PTSD, non-PTSD and it can be used extensively.