The 11th version of the International Classification of Diseases (ICD-11; WHO, 2018) describes two distinct trauma related disorders, Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). This review aims to summarise and synthesize evidence from factor analytic and mixture modelling studies that have investigated the latent structure of the International Trauma Questionnaire. A systematic search of PsycInfo, Web of Science, Scopus and Pubmed databases was conducted to identify relevant articles. Thirty-three studies met the inclusion criteria for this systematic review. The latent structure of the ITQ was best represented by two models; a correlated six-factor model (Re-experiencing, Avoidance, Threat, Affect Dysregulation, Negative Self Concept, and Disturbed Relationships) and a two-factor second-order model (PTSD and Disturbances in Self-Organization). Mixture model studies consistently identified distinct classes representing those displaying PTSD and CPTSD symptoms. Numerous studies demonstrated support for the factorial and discriminant validity of PTSD and CPTSD when analysed in conjunction with other variables. Overall, support was found for the conceptual coherence of PTSD and CPTSD as empirically distinguishable disorders, as measured by the ITQ. The available evidence demonstrates that the ITQ is a valid measure of ICD-11 PTSD and CPTSD. Recommendations for future research are included.

《国际疾病分类》（ICD-11; WHO，2018）的第11版描述了两种不同的创伤相关疾病，即创伤后应激障碍（PTSD）和复杂性PTSD（CPTSD）。这篇综述旨在总结和综合来自因子分析和混合模型研究的证据，这些研究调查了《国际创伤问卷》的潜在结构。对PsycInfo，Web of Science，Scopus和Pubmed数据库进行了系统搜索，以识别相关文章。33项研究符合这项系统评价的纳入标准。ITQ的潜在结构最好用两种模型来表示。相关的六因素模型（重新体验，回避，威胁，情感失调，负自我概念，和扰动关系）和两因素二阶模型（PTSD和自组织扰动）。混合物模型研究一致地确定了代表显示PTSD和CPTSD症状的类别的不同类别。大量研究表明，与其他变量一起分析时，PTSD和CPTSD的阶乘和判别有效性支持。总体而言，通过ITQ的调查发现，PTSD和CPTSD概念上的一致性是经验上可区分的疾病。现有证据表明，ITQ是对ICD-11 PTSD和CPTSD的有效测量。包括对未来研究的建议。大量研究表明，与其他变量一起分析时，PTSD和CPTSD的阶乘和判别有效性支持。总体而言，通过ITQ的调查发现，PTSD和CPTSD概念上的一致性是经验上可区分的疾病。现有证据表明，ITQ是对ICD-11 PTSD和CPTSD的有效测量。包括对未来研究的建议。大量研究表明，与其他变量一起分析时，PTSD和CPTSD的阶乘和判别有效性支持。总体而言，通过ITQ的调查发现，PTSD和CPTSD概念上的一致性是经验上可区分的疾病。现有证据表明，ITQ是对ICD-11 PTSD和CPTSD的有效测量。包括对未来研究的建议。