School of Kinesiology and Health Studies, 28 Division St., Queen's University, Kingston, ON, Canada K7L 3N6.
Health Place. 2011 Jul;17(4):920-8. doi: 10.1016/j.healthplace.2011.04.007. Epub 2011 Apr 29.
We examined relationships between urban-rural status and three screen time behaviors (television, computer, video games), and the potential mediating effect of parent and peer support on these relationships. Findings are based on American (n = 8563) and Canadian (n = 8990) youth in grades 6-10 from the 2005/06 Health Behavior in School-Aged Children Survey. Weekly hours of individual screen time behaviors were calculated. Urban-rural status was defined using the Beale coding system. Parent and peer support variables were derived from principal component analysis. In comparison to the referent group (non-metro adjacent), American youth in the most rural areas were more likely to be high television users and less likely to be high computer users. Conversely, Canadian youth in medium and large metropolitan areas were less likely to be high television users and more likely to be high computer users. Parent and peer support did not strongly mediate the relationships between urban-rural status and screen time. These findings suggest that interventions aiming to reduce screen time may be most effective if they consider residential location and the specific screen time behavior.
我们研究了城乡地位与三种屏幕时间行为（电视、电脑、视频游戏）之间的关系，以及父母和同伴支持对这些关系的潜在中介作用。研究结果基于美国（n=8563）和加拿大（n=8990）6-10 年级青少年 2005/06 年在校儿童健康行为调查的数据。每周个人屏幕时间行为的时间以小时计算。城乡地位使用 Beale 编码系统定义。父母和同伴支持变量来自主成分分析。与参照组（非都市区相邻）相比，美国最农村地区的青少年更有可能成为长时间看电视者，而不太可能成为长时间使用电脑者。相反，加拿大中等和大城市地区的青少年不太可能成为长时间看电视者，而更有可能成为长时间使用电脑者。父母和同伴支持并没有强烈地调节城乡地位与屏幕时间之间的关系。这些发现表明，如果干预措施考虑到居住地点和具体的屏幕时间行为，那么旨在减少屏幕时间的干预措施可能最为有效。
