Xu Mingtu, Fu Cong, Li Jingyang, Wu Bo, Mei Songli, Tian Runhui
Department of Mental Health, First Affiliated Hospital of Jilin University, Changchun, 130021, Jilin, China.
Diagnosis and Treatment Center For Psychosomatic Disease, The Sixth Hospital of Changchun, Changchun, Jilin, China.
BMC Public Health. 2025 Feb 13;25(1):601. doi: 10.1186/s12889-025-21778-5.
The purpose of this study was to develop a digital self-harm scale suitable for Chinese adolescents, and to test its reliability and validity.
Through semi-structured interview, literature analysis and expert evaluation, the initial questionnaire was developed, and 1651 students from three middle schools in Jilin Province were selected for questionnaire survey. Item analysis and exploratory factor analysis were carried out, and 843 students were selected for confirmatory factor analysis, convergent validity, discrimination validity, criterion validity, content consistency reliability and retest reliability.
The results showed that the digital self-harm scale consisted of eight items divided into two factors, namely External self image harm and Inner self emotional harm. And 73.47% of the total variance was explained. The two-factor structure model fitted well (χ/df = 4.2, CFI = 0.994, TLI = 0.989, SRMR = 0.01, RMSEA = 0.062). The total score and each factor score of the digital self-harm scale were negatively correlated with sleep duration, and positively correlated with other criteria. The Cronbach α coefficient of the total scale and each factor was 0.938-0.965, and the retest reliability was 0.983-0.991.
The Inner self emotional harm dimension has few questions, the relationship and mechanism between digital self-harm and non-suicidal self-injury is not deep enough.
The digital self-harm scale developed in this study has good validity and reliability, and can be used as a measurement tool to assess the digital self-harm of Chinese adolescents.
本研究旨在开发一种适用于中国青少年的数字自我伤害量表，并检验其信效度。
通过半结构化访谈、文献分析和专家评估编制初始问卷，选取吉林省三所中学的1651名学生进行问卷调查。进行项目分析和探索性因素分析，选取843名学生进行验证性因素分析、收敛效度、区分效度、效标效度、内容一致性信度和重测信度分析。
结果显示，数字自我伤害量表由8个项目组成，分为两个因子，即外部自我形象伤害和内部自我情感伤害。共解释了73.47%的总方差。两因子结构模型拟合良好（χ/df = 4.2，CFI = 0.994，TLI = 0.989，SRMR = 0.01，RMSEA = 0.062）。数字自我伤害量表的总分及各因子分与睡眠时间呈负相关，与其他效标呈正相关。总量表及各因子的Cronbach α系数为0.938 - 0.965，重测信度为0.983 - 0.991。
内部自我情感伤害维度题目较少，数字自我伤害与非自杀性自我伤害之间的关系及机制探讨不够深入。
本研究编制的数字自我伤害量表具有良好的效度和信度，可作为评估中国青少年数字自我伤害的测量工具。
