Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationships

Background Self-harm is an increasing global public health concern, with a growing prevalence in younger children. This study investigates the associations between parental marital status and self-harm behaviors among primary school students, with a focus on the mediating role of depressive symptoms...

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Main Authors: Ming Ai, Xiao-Ming Xu, Wo Wang, JianMei Chen, Jinglan He, Qi Zhang, Su Hong, Yao Gan, Jun Cao, Daqin Ding, Jinhui Hu, Shuang Zhang, Li Kuang
Format: Article
Language:English
Published: PeerJ Inc. 2025-04-01
Series:PeerJ
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Online Access:https://peerj.com/articles/19307.pdf
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author Ming Ai
Xiao-Ming Xu
Wo Wang
JianMei Chen
Jinglan He
Qi Zhang
Su Hong
Yao Gan
Jun Cao
Daqin Ding
Jinhui Hu
Shuang Zhang
Li Kuang
author_facet Ming Ai
Xiao-Ming Xu
Wo Wang
JianMei Chen
Jinglan He
Qi Zhang
Su Hong
Yao Gan
Jun Cao
Daqin Ding
Jinhui Hu
Shuang Zhang
Li Kuang
author_sort Ming Ai
collection DOAJ
description Background Self-harm is an increasing global public health concern, with a growing prevalence in younger children. This study investigates the associations between parental marital status and self-harm behaviors among primary school students, with a focus on the mediating role of depressive symptoms and the moderating effect of classmate relationships. Methods A cross-sectional survey was conducted among 33,285 students (grades 3–6; mean age = 10.36 years) in the Shapingba District of Chongqing, China, from September to December 2020. Self-report measures included the Children’s Depression Inventory (CDI), general demographic data, self-harm behaviors, and parental marital status. Data were analyzed using SPSS 26.0 for descriptive statistics and Mplus 8.1 for structural equation modeling (SEM), assessing the effects of parental marital status on self-harm. Results The reporting rates of depression and self-harm in grades 3–6 of primary school are 16.3% and 12.7%, respectively. Parental separation exhibited a more pronounced overall impact on self-harm (β = 0.120) compared to divorce (β = 0.105). Positive classmate relationships mitigated the indirect effect of separation on self-harm mediated by depression, reducing it from 0.098 to 0.072. Additionally, these relationships attenuated the direct effect of divorce on self-harm, decreasing it from 0.088 to 0.043. Depression significantly mediates the relationship between parental separation and children’s self-harm, with direct and indirect effects accounting for 53% (β = 0.057) and 47% (β = 0.063) of the total effect, respectively. Conclusion The marital status of parents, especially in cases of separation, has a significant impact on self-harm behaviors among primary school students, with depression acting as a key mediating factor. Supportive classmate relationships can alleviate this effect, highlighting their importance in mental health interventions. These findings offer valuable insights for the development of policies aimed at reducing self-harm and enhancing psychological well-being among children.
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spelling doaj-art-1c698ec2fba440fda2f1005fdfcf292d2025-08-20T03:08:09ZengPeerJ Inc.PeerJ2167-83592025-04-0113e1930710.7717/peerj.19307Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationshipsMing Ai0Xiao-Ming Xu1Wo Wang2JianMei Chen3Jinglan He4Qi Zhang5Su Hong6Yao Gan7Jun Cao8Daqin Ding9Jinhui Hu10Shuang Zhang11Li Kuang12Department of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaMental Health Center, University-Town Hospital of ChongQing Medical University, ChongQing, GaoXin, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaMental Health Center, University-Town Hospital of ChongQing Medical University, ChongQing, GaoXin, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaMental Health Center, University-Town Hospital of ChongQing Medical University, ChongQing, GaoXin, ChinaDepartment of Psychiatry, the First Affiliated Hospital of ChongQing Medical University, ChongQing, Yuzhong, ChinaBackground Self-harm is an increasing global public health concern, with a growing prevalence in younger children. This study investigates the associations between parental marital status and self-harm behaviors among primary school students, with a focus on the mediating role of depressive symptoms and the moderating effect of classmate relationships. Methods A cross-sectional survey was conducted among 33,285 students (grades 3–6; mean age = 10.36 years) in the Shapingba District of Chongqing, China, from September to December 2020. Self-report measures included the Children’s Depression Inventory (CDI), general demographic data, self-harm behaviors, and parental marital status. Data were analyzed using SPSS 26.0 for descriptive statistics and Mplus 8.1 for structural equation modeling (SEM), assessing the effects of parental marital status on self-harm. Results The reporting rates of depression and self-harm in grades 3–6 of primary school are 16.3% and 12.7%, respectively. Parental separation exhibited a more pronounced overall impact on self-harm (β = 0.120) compared to divorce (β = 0.105). Positive classmate relationships mitigated the indirect effect of separation on self-harm mediated by depression, reducing it from 0.098 to 0.072. Additionally, these relationships attenuated the direct effect of divorce on self-harm, decreasing it from 0.088 to 0.043. Depression significantly mediates the relationship between parental separation and children’s self-harm, with direct and indirect effects accounting for 53% (β = 0.057) and 47% (β = 0.063) of the total effect, respectively. Conclusion The marital status of parents, especially in cases of separation, has a significant impact on self-harm behaviors among primary school students, with depression acting as a key mediating factor. Supportive classmate relationships can alleviate this effect, highlighting their importance in mental health interventions. These findings offer valuable insights for the development of policies aimed at reducing self-harm and enhancing psychological well-being among children.https://peerj.com/articles/19307.pdfParental marital statusSelf-harmDepressionChinese primary school studentsClassmate relationships
spellingShingle Ming Ai
Xiao-Ming Xu
Wo Wang
JianMei Chen
Jinglan He
Qi Zhang
Su Hong
Yao Gan
Jun Cao
Daqin Ding
Jinhui Hu
Shuang Zhang
Li Kuang
Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationships
PeerJ
Parental marital status
Self-harm
Depression
Chinese primary school students
Classmate relationships
title Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationships
title_full Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationships
title_fullStr Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationships
title_full_unstemmed Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationships
title_short Impact of parental marital status on self-harm in Chinese primary school students: the mediating role of depression and the moderating effect of classmate relationships
title_sort impact of parental marital status on self harm in chinese primary school students the mediating role of depression and the moderating effect of classmate relationships
topic Parental marital status
Self-harm
Depression
Chinese primary school students
Classmate relationships
url https://peerj.com/articles/19307.pdf
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