Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
Suicide Life Threat Behav. 2011 Apr;41(2):180-92. doi: 10.1111/j.1943-278X.2011.00017.x. Epub 2011 Feb 22.
Hierarchical linear models were used to examine trajectories of impulsivity and capability between ages 10 and 25 in relation to suicide attempt in 770 youths followed longitudinally: intercepts were set at age 17. The impulsivity measure assessed features of urgency (e.g., poor control, quick provocation, and disregard for external constraints); the capability measure assessed aspects of self-esteem and mastery. Compared to nonattempters, attempters reported significantly higher impulsivity levels with less age-related decline, and significantly lower capability levels with less age-related increase. Independent of other risks, suicide attempt was related significantly to higher impulsivity between ages 10 and 25, especially during the younger years, and lower capability. Implications of those findings for further suicidal behavior and preventive/intervention efforts are discussed.
采用层次线性模型，对 770 名纵向随访的青少年在 10 至 25 岁之间的冲动性和能力轨迹与自杀企图之间的关系进行了研究：截距设置在 17 岁。冲动性测量评估了紧迫感的特征（例如，控制能力差、易被激怒和不顾外部限制）；能力测量评估了自尊和掌握能力的各个方面。与非企图者相比，企图者报告的冲动性水平明显更高，且随着年龄的增长下降幅度较小，能力水平明显更低，且随着年龄的增长增加幅度较小。独立于其他风险因素，自杀企图与 10 至 25 岁之间的冲动性升高显著相关，尤其是在年轻时，且与能力降低显著相关。讨论了这些发现对进一步的自杀行为和预防/干预努力的意义。
