Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, No.81 Meishan Road, Hefei 230032, Anhui, China.
Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, No.81 Meishan Road, Hefei 230032, Anhui, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China; NHC Key Laboratory of study on abnormal gametes and reproductive tract, No 81 Meishan Road, Hefei 230032, Anhui, China.
J Affect Disord. 2020 May 1;268:12-19. doi: 10.1016/j.jad.2020.02.049. Epub 2020 Feb 28.
To examine whether timing and chronicity of bullying victimization (BV) play a significant role in linking exposure to BV to suicidal behaviors in university students.
A multistage stratification sampling method was used to select a sample of 4034 university students (18-23 years, mean age 20.38±1.35 years, 41.9% female). We used latent class analysis and developmental-stage-based characterizations of BV timing and chronicity to explore the sensitive periods for the effect of BV on suicidal behaviors.
The prevalence rates of suicidal ideation, plans and attempts among our study participants were 9.9%, 3.0% and 1.3%, respectively. BV during primary school (OR = 2.12, 95% CI: 1.55-2.90) and secondary school (OR = 2.65, 95% CI: 1.80-3.90) was associated with suicidal ideation among university students. We identified four classes of life-course BV experiences (low BV, 73.8%; moderate BV, 18.6%; secondary school BV, 4.4% and persistent BV, 3.2%). Persistent BV was associated with 2.50 times (95% CI: 1.56-3.98), 2.98 times (95% CI: 1.48-6.02), and 6.13 times (95% CI: 2.48-15.14) higher risk of suicide ideation, plans, and attempts, respectively. Both moderate BV (OR = 1.75, 95% CI: 1.35-2.26) and secondary school BV (OR=2.01, 95% CI: 1.29-3.12) were positively correlated with suicidal ideation. Furthermore, there was a dose-response relationship between the number of periods of BV and suicidal behaviors.
This study was a cross-sectional study based on self-reported measures, especially BV experiences in each school stage.
This study identifies sensitive periods for the effect of BV on suicidal behaviors among university students in China.
探讨欺凌受害（BV）的发生时间和持续时间是否在将暴露于 BV 与大学生自杀行为联系起来方面发挥重要作用。
采用多阶段分层抽样方法，选取了 4034 名大学生（18-23 岁，平均年龄 20.38±1.35 岁，41.9%为女性）作为研究对象。我们使用潜在类别分析和基于发展阶段的 BV 发生时间和持续时间特征来探索 BV 对自杀行为影响的敏感时期。
研究参与者中出现自杀意念、计划和尝试的比例分别为 9.9%、3.0%和 1.3%。小学（OR=2.12，95%CI：1.55-2.90）和中学（OR=2.65，95%CI：1.80-3.90）期间的 BV 与大学生自杀意念有关。我们确定了一生中经历 BV 的四种类型（低 BV，73.8%；中度 BV，18.6%；中学 BV，4.4%和持续 BV，3.2%）。持续的 BV 与自杀意念、计划和尝试的风险分别增加 2.50 倍（95%CI：1.56-3.98）、2.98 倍（95%CI：1.48-6.02）和 6.13 倍（95%CI：2.48-15.14）。中度 BV（OR=1.75，95%CI：1.35-2.26）和中学 BV（OR=2.01，95%CI：1.29-3.12）与自杀意念呈正相关。此外，BV 发生次数与自杀行为之间存在剂量反应关系。
本研究是一项基于自我报告测量的横断面研究，特别是每个学校阶段的 BV 经历。
本研究确定了中国大学生中 BV 对自杀行为影响的敏感时期。
