DataSheet1_Relationship between social anxiety and sleep quality in depressed adolescents: the mediating role of internet addiction.docx

ObjectiveThis study investigated the association between social anxiety and sleep quality and further explored the potential mediating role of internet addiction in depressed adolescents.
MethodsThis study included 440 Chinese depressed adolescents (mean age = 15.0 years, SD = 2.0). Participants completed questionnaires, including Social Avoidance and Social Distress Scale, Internet Addiction Test, and Pittsburgh Sleep Quality Index. A structural equation model was used to analyze the association between social anxiety and sleep quality, with internet addiction as a mediator. Gender differences were examined by multi-group analysis.
ResultsAmong participants, 61.8% reported poor sleep quality. The sleep quality was significantly different on the level of gender (p = 0.016), education level (p = 0.043), and family history (p = 0.002). Sleep quality was positively associated with social anxiety (p < 0.001) and internet addiction (p < 0.001). Furthermore, internet addiction partially mediated the relationship between social anxiety and sleep quality, and the mediation effect ratio was 16.1% (p < 0.001). Finally, no significant differences were found in this mechanism.
ConclusionWe concluded that both social anxiety and internet addiction were risk factors for depressed adolescents’ poor sleep quality. Social anxiety further affected sleep quality through internet addiction.

研究目的：本研究旨在考察社交焦虑与睡眠质量之间的关联，并进一步探讨网络成瘾在抑郁青少年中所起到的潜在中介作用。
研究方法：本研究共纳入440名中国抑郁青少年（平均年龄15.0岁，标准差SD=2.0）。所有参与者完成了以下问卷：社交回避与苦恼量表（Social Avoidance and Social Distress Scale）、网络成瘾量表（Internet Addiction Test）以及匹兹堡睡眠质量指数（Pittsburgh Sleep Quality Index）。本研究采用结构方程模型（structural equation model）分析社交焦虑与睡眠质量的关联，并以网络成瘾作为中介变量。同时通过多组分析（multi-group analysis）检验性别差异。
研究结果：参与本研究的青少年中，61.8%报告存在睡眠质量不佳的情况。睡眠质量在性别（p=0.016）、受教育程度（p=0.043）以及家族史（p=0.002）层面均存在显著差异。睡眠质量与社交焦虑（p<0.001）、网络成瘾（p<0.001）均呈显著正相关。进一步分析显示，网络成瘾在社交焦虑与睡眠质量的关联中起到部分中介作用，中介效应占比为16.1%（p<0.001）。最后，该中介机制未发现显著的性别差异。
研究结论：本研究证实，社交焦虑与网络成瘾均为抑郁青少年睡眠质量不佳的危险因素；社交焦虑可通过网络成瘾这一中介路径对睡眠质量产生影响。