Data_Sheet_1_Severity in the ICD-11 personality disorder model: Evaluation in a Spanish mixed sample.PDF

Severity is the main component of the ICD-11 personality disorder (PD) classification, but pertinent instruments have only recently been developed. We analyzed the psychometric properties of the ICD-11 Personality Disorder Severity scale (PDS-ICD-11) in a mixed sample of 726 community and clinical subjects. We also examined how the different components of the ICD-11 PD system —five trait domains, the borderline pattern specifier, and severity, all of them measured through self-reports— are interconnected and operate together. PDS-ICD-11 properties were adequate and similar to those of the original instrument. However, regressions and factor analyses showed a considerable overlap of severity with the five personality domains and the borderline specifier (72.6%). Bifactor modeling resulted in a general factor of PD (g-PD) that was not equivalent to severity nor improved criterion validity. The whole ICD-11 PD system, i.e., five personality domains, borderline, and severity, explained an average of 43.6% of variance of external measures of well-being, disability, and clinical problems, with severity contributing 4.8%. Suggestions to further improve the ICD-11 PD taxonomy include remodeling the present definition of severity to give more weight to the real-life consequences of traits.

严重程度是 ICD-11 人格障碍（PD）分类的主要组成部分，但相关的评估工具直至近期才得以开发。本研究对包括 726 名社区和临床受试者的混合样本进行了分析，以评估 ICD-11 人格障碍严重程度量表（PDS-ICD-11）的心理测量特性。此外，我们还探讨了 ICD-11 PD 系统的不同组成部分——五个特质域、边缘型模式界定和严重程度（均通过自我报告进行测量）——之间的相互联系和协同作用。PDS-ICD-11 的特性充分且与原始工具相似。然而，回归分析和因素分析显示严重程度与五个人格域及边缘型界定之间存在相当大的重叠（72.6%）。双因素模型导致的人格障碍一般因子（g-PD）既不等同于严重程度，也未提高标准效度。整个 ICD-11 PD 系统，即五个人格域、边缘型和严重程度，平均解释了外部测量幸福、残疾和临床问题的 43.6% 的方差，其中严重程度贡献了 4.8%。为进一步改进 ICD-11 PD 分类体系，建议重新构建严重程度的定义，以更重视特质在现实生活中的后果。