School of Public Health, Fudan University/Key Laboratory of Public Health Safety, Chinese Ministry of Education.
J Epidemiol. 2014;24(5):397-403. doi: 10.2188/jea.je20140006. Epub 2014 Jun 14.
Rapid urbanization in China has led to a proliferation of electronic entertainment media among youth. Prolonged screen time (ST; includes watching television and playing on computers, video game consoles, or mobile phones) is linked to poor health profiles. The aim of this study was to report recreational ST behaviors and ST correlates among Chinese adolescents living in two regions with different degrees of urbanization.
A cross-sectional, school-based survey (n = 3461 adolescents; aged 12-14 years old) living in inner-city Shanghai and a peri-urban region of Hangzhou. Students completed a questionnaire including family characteristics, daily ST, and information on family environment related to screen use. Recreational ST was categorized into two groups according to recommendations by the American Academy of Pediatrics (< or ≥2 h/day). Parents reported their own ST and also reported educational attainment as a proxy for socioeconomic status.
ST was higher among boys than girls and on weekends than weekdays. Peri-urban girls were more likely to exceed 2 h/day ST compared to inner-city girls on weekends. Having a father with no university degree, mother's TV viewing ≥2 h/day, no ST rules at home, and eating meals in front of the TV were associated with higher ST on both weekdays and weekends, and regional differences were found for weekend ST.
TV viewing and playing on the computer were the most prevalent ST behaviors among Chinese adolescents. Mobile phone playing was less prevalent but persistent throughout the week. More population-level surveillance and research is needed to monitor the trends in ST behaviors and to better understand the characteristics of those who are at risk.
中国的快速城市化导致青少年中电子娱乐媒体泛滥。长时间屏幕时间（ST；包括看电视和玩电脑、视频游戏机或手机）与健康状况不佳有关。本研究旨在报告生活在城市化程度不同的两个地区的中国青少年的娱乐性 ST 行为和 ST 相关性。
这是一项横断面、基于学校的调查（n = 3461 名青少年；年龄 12-14 岁），参与者分别来自上海市中心城区和杭州市郊区。学生完成了一份问卷，包括家庭特征、日常 ST 以及与屏幕使用相关的家庭环境信息。根据美国儿科学会的建议（<或≥2 小时/天），将娱乐性 ST 分为两组。父母报告自己的 ST，还报告了受教育程度作为社会经济地位的替代指标。
ST 男孩高于女孩，周末高于工作日。与市中心城区的女孩相比，郊区的女孩周末更容易超过 2 小时/天的 ST。父亲没有大学学历、母亲每天看电视≥2 小时、家中没有 ST 规则以及在电视机前吃饭与周末和平日的 ST 都较高有关，并且在周末 ST 方面还存在地区差异。
在中国青少年中，看电视和玩电脑是最常见的 ST 行为。玩手机的情况较少，但在一周内持续存在。需要进行更多的人群水平监测和研究，以监测 ST 行为的趋势，并更好地了解处于危险中的人群的特点。
