Measurement of Youth Media Exposure and Health Outcomes

项目摘要/摘要 接触娱乐媒体(电视、电影、音乐、视频游戏和互联网)一直是 与关键的青少年健康结果相关，包括肥胖、酒精和烟草使用，通过 大量的研究证据。这项研究一直受到数据收集措施薄弱和 对电视观看的狭隘关注。在年轻人中，媒体的使用急剧增长和多样化 在富媒体环境中成长，经常同时处理两个或多个媒体。这个 这项研究的广泛、长期目标是验证青年媒体暴露测量(MYME)， 旨在获得更敏感和更全面的评估的多方法工具 青少年对娱乐媒体的使用和接触。它的具体目标是测试可行性和 MYME的可接受性，评估MYME的信度和效度，以及评估MYME的能力 预测青少年超重、饮酒和吸烟的主要健康风险。MYME联合收割机 已建立的、补充的回忆估计(RE)、时间使用日记(TUD)和瞬间方法 抽样(MS)，这样每个人的长处就可以弥补其他人的局限性。150名13至15岁的青年 老年人将完成一份关于他们的媒体暴露、烟酒使用状况的RE，并有他们的身高 和注册时测量的体重(RE0)。他们将携带一台掌上电脑和摄像机一周， 通过回答有关他们媒体曝光的问题来回应随机信号，包括内容， 背景和他们的精神状态，以及记录他们的环境、活动和媒体的视频 曝光。在随机选择的工作日和周末，参与者将保持24小时的TUD 他们的活动，包括媒体使用、内容和使用环境。在周末，参与者 将归还他们的设备并执行RE1，回忆他们在过去一周的媒体使用情况。他们会 休息1周后再次完成完整的MYME方案，使每个MYME组件和整体 可以评估测量的信度和效度。在完成MYME一年后，参与者将 被称重和测量，并将再次完成RE0，评估媒体暴露和物质使用。 这项研究将对青年媒体进行更敏感、更全面和更准确的衡量 暴露和关键健康结果，目的是制定更有效的预防方案。年轻人接触媒体与肥胖、吸烟和饮酒有关。然而，它一直是 难以确定这些关系的特征，难以制定有效的预防和干预措施 战略，因为研究方法侧重于过时的媒体技术和使用模式。这个 拟议的研究将测试一种创新的方法，以获得更敏感和更全面的 测量当今年轻人在多媒体环境和多任务生活方式中的媒体曝光率。

PROJECT ABSTRACT/SUMMARY Exposure to entertainment media (TV, movies, music, video games and the Internet) has been associated with key adolescent health outcomes, including obesity, alcohol, and tobacco use, by a large body of research evidence. This research has been limited by weak data collection measures and a narrow focus on television viewing. Media use has grown and diversified dramatically, with youth growing up in media-rich environments, often multitasking with 2 or more media simultaneously. The broad, long-term objective of this study is to validate Measurement of Youth Media Exposure (MYME), a multimethod instrument designed to obtain a more sensitive and comprehensive assessment of adolescent use of and exposure to entertainment media. Its specific aims are to test the feasibility and acceptability of MYME, to assess MYME's reliability and validity, and to evaluate MYME's ability to predict key adolescent health risks of overweight, alcohol use, and tobacco smoking. MYME combines established, complementary methods of Recall Estimate (RE), Time-Use Diary (TUD), and Momentary Sampling (MS) so the strengths of each compensate for limitations of others. 150 youth 13 to 15 years old will complete a RE of their media exposure, alcohol and tobacco use status and have their height and weight measured on enrollment(RE0). They will carry a PDA and video camcorder for 1 week, responding to random signals by answering questions on their media exposure, including content, context and their state of mind, and video recording their environments, activities, and media exposures. On a randomly selected weekday and weekend day, participants will keep a 24 hour TUD of their activities, including media use, content, and context of use. At the end of the week, participants will return their equipment and execute RE1, recalling their media use over the past week. They will complete the full MYME protocol again after 1 week off, so that each MYME component and the whole measure can be evaluated for reliability and validity. One year after completing MYME, participants will be weighed and measured and will again complete RE0 assessing media exposure and substance use. This study will evaluate a more sensitive, comprehensive and accurate measurement of youth media exposure and key health outcomes with the goal of developing more effective prevention programs. Young people's exposure to media has been linked to obesity, smoking, and alcohol use. However, it has been difficult to definitively characterize the relationships and to develop effective prevention and intervention strategies because research methods have focused on obsolete media technologies and use patterns. The proposed research will test an innovative method of obtaining a more sensitive and comprehensive measurement of media exposure in the multimedia environments and multitasking lifestyles of today's youth.