Department of Pediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan.
Department of Obstetrics and Gynaecology, School of Medicine, Juntendo University, Tokyo, Japan.
Psychiatry Clin Neurosci. 2019 Nov;73(11):707-712. doi: 10.1111/pcn.12917. Epub 2019 Aug 27.
The aim of this study was to identify women with thoughts of self-harm preceded by suicidal ideation, during the perinatal period, on cluster analysis and to clarify their psychological correlates.
A secondary analysis was conducted using the data from a longitudinal study involving 18 obstetric clinics between 2011 and 2012 in Kumamoto Prefecture (Japan). Self-administered questionnaires including demographic data, Edinburgh Postnatal Depression Scale, Temperament and Character Inventory, and the Postnatal Bonding Questionnaire were distributed during the third trimester of pregnancy (wave 1), at 5 days (wave 2), and 1 month postpartum (wave 3).
On cluster analysis using the data of participants who answered all observational points, the participants were divided into two groups: cluster 1, normal (n = 201); and cluster 2, thoughts of self-harm (n = 42). Low self-directedness, low cooperativeness, higher anxiety, depression, and lack of affection and anger and rejection towards the baby were associated with cluster 2.
The finding that low self-directedness and low cooperativeness were related to the cluster 2 group suggests that immature personality traits may work as a predisposing factor mediating between anxiety, depression and thoughts of self-harm.
本研究旨在通过聚类分析识别在围产期出现自杀意念前有自我伤害想法的女性，并阐明其心理相关性。
本研究对 2011 年至 2012 年在日本熊本县的 18 个产科诊所进行的一项纵向研究的数据进行了二次分析。在妊娠晚期（第 1 波）、产后第 5 天（第 2 波）和产后第 1 个月（第 3 波），参与者填写了包括人口统计学数据、爱丁堡产后抑郁量表、气质与性格量表和产后依恋问卷在内的自我报告问卷。
使用回答了所有观察点的参与者的数据进行聚类分析后，参与者被分为两组：第 1 组，正常（n=201）；第 2 组，有自我伤害想法（n=42）。低自我导向、低合作性、更高的焦虑、抑郁、缺乏对婴儿的感情和愤怒以及对婴儿的拒绝与第 2 组相关。
低自我导向和低合作性与第 2 组相关的发现表明，不成熟的人格特质可能是焦虑、抑郁和自我伤害想法之间的中介因素。
