Using Exploratory Data Mining to Identify Important Correlates of Nonsuicidal Self-Injury Frequency
Using Exploratory Data Mining to Identify Important Correlates of Nonsuicidal Self-Injury Frequency
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DOI：
10.1037/vio0000146
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发表时间：
2018-07-01
影响因子：
2.8
通讯作者：
McCloskey, Michael S.
中科院分区：
文献类型：
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作者：
Ammerman, Brooke A.;Jacobucci, Ross;McCloskey, Michael S.
目的：非自杀性自伤 (NSSI) 与许多不良后果有关，更频繁的 NSSI 会增加损伤的可能性、严重性和更严重的自残行为（例如自杀）。尽管 NSSI 频率在理解一个人行为的严重性方面具有确定的重要性，但仍然需要确定哪些结构可能对预测频率有影响。当前的研究旨在通过两种探索性数据挖掘方法确定哪些相关因素与 NSSI 频率最重要，从而填补这一空白。方法：712 名有 NSSI 病史的本科生完成了 NSSI 行为、自杀、认知情感缺陷和精神病理学症状的自我报告测量。结果：两种探索性数据挖掘方法（套索回归和随机森林）都表明 NSSI 方法的数量是与生命周期 NSSI 频率相关的最重要因素。一旦去除这个变量，自杀计划和抑郁症状在不同方法之间就存在显着相关性。结论：目前的研究结果支持有关 NSSI 频率和 NSSI 方法之间关系的文献，但也暗示了自杀计划（一个经常被忽视的因素）和抑郁症与 NSSI 严重程度的关系。
Objective: Nonsuicidal self-injury (NSSI) has been linked to many adverse outcomes, with more frequent NSSI increasing the likelihood of impairment, severity, and more serious self-harming behavior (e.g., suicidality). Despite the determined importance of NSSI frequency in understanding the severity of one's behavior, there is still a need to identify which constructs may be influential in predicting frequency. The current study aimed to fill this gap by identifying which correlates are most important in relation to NSSI frequency through 2 exploratory data mining methods. Method: Seven hundred twelve undergraduate students with a history of NSSI completed self-report measures of NSSI behavior, suicidality, cognitive-affective deficits, and psychopathology symptomology. Results: Both exploratory data mining methods-lasso regression and random forests-demonstrated number of NSSI methods to be the factor with the most importance in relation to lifetime NSSI frequency. Once this variable was removed, suicide plan and depressive symptomology were significant correlates across methods. Conclusions: The current findings support the literature concerning the relationship between NSSI frequency and NSSI methods but also implicate suicide plans, an often-overlooked factor, and depression in NSSI severity.