ABSTRACT

The aim of the present study was to evaluate whether anxiety and insomnia symptoms, somatic symptoms, and social dysfunction mediate the link between chronotype and suicidality, as depressive symptoms are known to do, among students of the faculties of Medicine and Psychology. Data from a total of 289 students were eligible for the analysis. The students completed the Suicide Behaviors Questionnaire – Revised, Composite Scale of Morningness, General Health Questionnaire. Single-predictor linear regression models were created to predict suicidality, with a subsequent mediation analysis. A preference toward eveningness was associated with an increase in suicidality Somatic symptoms, anxiety/insomnia, and depressive symptoms fully mediated the relationship between chronotype and suicidality. Depressive symptoms were found to present the strongest effect size of mediation. Social dysfunction was associated with both eveningness and suicidality, but did not play a mediating role. There might be a need to evaluate nonpsychotic mental health indices other than depressive symptoms when assessing the link between suicidality and chronotype among students of the faculties of Medicine and Psychology.

摘要

本研究的目的是评估医学和心理学系学生的焦虑和失眠症状、躯体症状和社交功能障碍是否介导了睡眠类型和自杀倾向之间的联系，正如已知的抑郁症状那样。共有 289 名学生的数据符合分析条件。学生完成了自杀行为问卷 - 修订版、晨昏综合量表、一般健康问卷。创建单预测线性回归模型来预测自杀，随后进行中介分析。对夜晚的偏好与自杀倾向的增加有关 躯体症状、焦虑/失眠和抑郁症状完全介导了睡眠类型和自杀倾向之间的关系。发现抑郁症状表现出最强的中介效应。社交功能障碍与晚睡和自杀有关，但没有起到中介作用。在评估医学和心理学系学生的自杀倾向和睡眠类型之间的联系时，可能需要评估除抑郁症状以外的非精神病性心理健康指标。