Catholic University of Cuenca, Azogues Campus, Azogues, Ecuador.
University of Palermo, Buenos Aires, Argentina.
J Health Popul Nutr. 2023 Jan 23;42(1):5. doi: 10.1186/s41043-022-00344-4.
The role of screen time in promoting obesity among children has been reported in previous studies. However, the effects of different screen types and the dose-response association between screen time and obesity among children is not summarized yet. In the current meta-analysis we systematically summarized the association between obesity and screen time of different screen types in a dose-response analysis.
A systematic search from Scopus, PubMed and Embase electronic databases was performed. Studies that evaluated the association between screen time and obesity up to September 2021 were retrieved. We included 45 individual studies that were drawn from nine qualified studies into meta-analysis.
The results of the two-class meta-analysis showed that those at the highest category of screen time were 1.2 times more likely to develop obesity [odds ratio (OR) = 1.21; confidence interval (CI) = 1.113, 1.317; I = 60.4%; P < 0.001). The results of subgrouping identified that setting, obesity status and age group were possible heterogeneity sources. No evidence of non-linear association between increased screen time and obesity risk among children was observed (P-nonlinearity = 0.310).
In the current systematic review and meta-analysis we revealed a positive association between screen time and obesity among children without any evidence of non-linear association. Due to the cross-sectional design of included studies, we suggest further studies with longitudinal or interventional design to better elucidate the observed associations.
以往的研究报告表明，屏幕时间在儿童肥胖中起作用。然而，不同类型的屏幕以及屏幕时间与儿童肥胖之间的剂量反应关系的影响尚未总结。在目前的荟萃分析中，我们系统地总结了不同类型屏幕的时间与肥胖之间的关联，并进行了剂量反应分析。
从 Scopus、PubMed 和 Embase 电子数据库中进行了系统搜索。检索了截至 2021 年 9 月评估屏幕时间与肥胖之间关系的研究。我们将来自 9 项合格研究的 45 项单独研究纳入荟萃分析。
两级荟萃分析的结果表明，处于最高屏幕时间类别的人肥胖的可能性增加 1.2 倍[比值比 (OR) = 1.21；置信区间 (CI) = 1.113，1.317；I = 60.4%；P < 0.001)]。亚组分析的结果表明，设置、肥胖状况和年龄组可能是异质性的来源。没有观察到屏幕时间增加与儿童肥胖风险之间存在非线性关联的证据 (P 非线性 = 0.310)。
在目前的系统评价和荟萃分析中，我们揭示了屏幕时间与儿童肥胖之间的正相关关系，没有任何非线性关联的证据。由于纳入研究的横断面设计，我们建议进一步进行具有纵向或干预性设计的研究，以更好地阐明观察到的关联。
