Arch Suicide Res. 2020;24(sup2):S165-S186. doi: 10.1080/13811118.2019.1586607. Epub 2019 May 9.
This study employed latent class analysis utilizing an array of features of non-suicidal self-injury (NSSI) in order to identify distinct subgroups of self-injurers. Participants were 359 undergraduates with NSSI history. Indicator variables were lifetime and last year frequency rates, number of methods, scarring, pain during self-injury, and functions of NSSI. Analyses yielded mild/experimental NSSI, moderate NSSI, moderate multiple functions NSSI, and severe NSSI groups, endorsing low, moderate, moderate multiple functions, and high frequencies of self-injury and presence of functions, respectively. Following class assignment, groups differed on self-esteem, social support and belongingness, internalizing symptoms, suicidal ideation and behaviors, and additional NSSI constructs. These subtype analyses emphasize matching phenotypes of NSSI to specific interventions considering dimensions of clinical functioning.
本研究采用潜在类别分析，利用非自杀性自伤（NSSI）的一系列特征，以确定自伤者的不同亚组。参与者为 359 名有 NSSI 史的本科生。指标变量为终生和去年的频率、方法数量、疤痕、自伤时的疼痛和 NSSI 的功能。分析产生了轻度/实验性 NSSI、中度 NSSI、中度多种功能 NSSI 和严重 NSSI 组，分别支持低、中、中多种功能和高自伤频率以及功能的存在。在分组后，组间在自尊、社会支持和归属感、内化症状、自杀意念和行为以及其他 NSSI 结构上存在差异。这些亚型分析强调根据临床功能的维度将 NSSI 的表型与特定干预措施相匹配。
