Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Eur J Public Health. 2013 Jun;23(3):492-8. doi: 10.1093/eurpub/cks102. Epub 2012 Aug 8.
Today's children spend a great deal of time viewing electronic screen material, but the consequences of such behaviors, if any, are unknown. This study sought to identify (i) the magnitude of total daily electronic screen time and (ii) the relations between electronic screen use and mental well-being indicators, in a sample of 10-12-year-old children.
We analysed cross-sectional, population-based data of 10-12-year-old children from the 2007 Youth in Iceland school survey (n = 10,829, response rate: 81.7%, boys: 50.5%). Logistic regression models with odds ratios and 95% confidence intervals were conducted to assess the odds of each selected mental well-being indicator, depending on the number of daily hours spent on each electronic screen-based activity. All analyses were conducted separately for boys and girls and adjusted for family structure.
The prevalence of self-reported screen use of 4 hours per day or more ranges from 2.8% to 6.6% among boys and from 1.0% to 3.8% among girls. All five screen-based activities were significantly associated with all seven well-being indicators (P < 0.001) with symptoms being more common with increased time spent on screen use.
This study is the first of its kind to demonstrate a dose-response relationship between electronic screen use and mental well-being in 10-12-year-old children. Further research is needed to assess the validity and potential implications of these findings.
如今，孩子们花费大量时间观看电子屏幕内容，但目前尚不清楚这些行为会带来哪些后果。本研究旨在确定（i）儿童每日电子屏幕总时长的范围，以及（ii）电子屏幕使用与心理健康指标之间的关系，研究对象为 10-12 岁儿童。
我们分析了 2007 年冰岛青年学校调查中 10-12 岁儿童的横断面、基于人群的数据（n=10829，应答率：81.7%，男生：50.5%）。使用比值比和 95%置信区间的逻辑回归模型，评估了每种选定的心理健康指标，取决于每天每种电子屏幕活动的时间。所有分析均针对男孩和女孩分别进行，并根据家庭结构进行了调整。
报告每天使用屏幕 4 小时或以上的比例，男孩为 2.8%-6.6%，女孩为 1.0%-3.8%。五种基于屏幕的活动均与所有七种幸福感指标显著相关（P<0.001），症状随着屏幕使用时间的增加而更为常见。
本研究首次在 10-12 岁儿童中证明了电子屏幕使用与心理健康之间的剂量-反应关系。需要进一步的研究来评估这些发现的有效性和潜在影响。
