Given that first responders experience elevated rates of posttraumatic stress disorder and suicide, there is a need for evidence-based assessments and treatments to accurately assess, diagnose, and evaluate treatment outcome. This study examined the psychometric properties of the Posttraumatic Stress Disorder (PTSD) Checklist for DSM-5 (PCL-5) in a sample of 133 firefighters/emergency medical technicians and police officers seeking treatment for PTSD. The results indicated that PCL-5 scores showed strong internal consistency and convergent and discriminant validity. Signal detection analyses indicated a good diagnostic accuracy and an optimal cutoff score of 41 for detecting PTSD. Consistent with recent studies, confirmatory factor analyses indicated that the anhedonia model of PTSD best fit the data. Overall, findings support use of the PCL-5 as a psychometrically sound measure of PTSD in individuals at high risk for exposure to trauma.

鉴于第一反应者的创伤后应激障碍和自杀率较高，因此需要基于证据的评估和治疗以准确评估，诊断和评估治疗结果。这项研究在133名寻求PTSD治疗的消防员/紧急医疗技术人员和警察的样本中，检查了DSM-5（PCL-5）的创伤后应激障碍（PTSD）检查表的心理计量学特性。结果表明，PCL-5评分具有很强的内部一致性以及收敛性和判别性。信号检测分析显示出良好的诊断准确性，并且检测PTSD的最佳截止评分为41。与最近的研究一致，验证性因素分析表明，PTSD的快感缺失模型最适合该数据。总体，