Department of Maternal, Child & Adolescent Health, School of Public Health, Anhui Medical University, Anhui, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui, China.
Department of Maternal, Child & Adolescent Health, School of Public Health, Anhui Medical University, Anhui, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui, China.
J Affect Disord. 2022 Dec 15;319:164-171. doi: 10.1016/j.jad.2022.09.047. Epub 2022 Sep 22.
Although screen time and fast-food consumption have been linked to suicidal behaviours, it is unclear whether their combined effects are associated with suicidal behaviours among adolescents.
A sample of 16,853 Chinese adolescents answered a standard questionnaire on screen time, fast-food consumption, and suicidal behaviours. A binomial logistic regression model was used to analyse the association between the three. An interaction model was used to examine the interaction effects of screen time and fast-food consumption on suicidal behaviours in adolescents.
There were positive correlations between screen time, fast-food consumption, and suicidal behaviours, even after adjusting for confounding factors. Interaction analyses indicated that increased screen time on weekdays and fast-food consumption were associated with suicidal ideation. The relative excess risk of interaction, attributable proportions, and synergy index of interaction were 0.41, 0.15, and 1.32, respectively. Increased screen time on weekends and fast-food consumption were associated with suicidal ideation. The relative excess risk of interaction, attributable proportions, and synergy index of interaction were 0.37, 0.14, and 1.27, respectively. Similar additive interaction effects were exhibited in increased screen time and fast-food consumption on suicidal planning. Positive additive interaction effects were observed in increased screen time on weekdays and fast-food consumption on suicide attempts.
A cross-sectional study design was used; therefore, causal associations remain unclear.
Screen time and fast-food consumption are cross-sectionally associated with suicidal behaviours among Chinese adolescents. Strategies should be considered to reduce screen time and fast-food consumption among adolescents.
尽管屏幕时间和快餐消费与自杀行为有关，但尚不清楚它们的综合效应是否与青少年的自杀行为有关。
一项对 16853 名中国青少年的样本进行了一项关于屏幕时间、快餐消费和自杀行为的标准问卷调查。使用二项逻辑回归模型分析了这三者之间的关联。采用交互模型检验了青少年屏幕时间和快餐消费对自杀行为的交互作用。
即使在调整了混杂因素后，屏幕时间、快餐消费和自杀行为之间仍存在正相关关系。交互分析表明，工作日增加屏幕时间和快餐消费与自杀意念有关。交互的相对超额风险、归因比例和交互协同指数分别为 0.41、0.15 和 1.32。周末增加屏幕时间和快餐消费与自杀意念有关。交互的相对超额风险、归因比例和交互协同指数分别为 0.37、0.14 和 1.27。增加屏幕时间和快餐消费对自杀计划也表现出类似的附加交互作用。在工作日增加屏幕时间和快餐消费与自杀企图方面观察到积极的附加交互作用。
使用的是横断面研究设计；因此，因果关系仍不清楚。
屏幕时间和快餐消费与中国青少年的自杀行为存在横断面关联。应考虑采取策略减少青少年的屏幕时间和快餐消费。
