Wallack L, Dorfman L
Department of Social and Administrative Health Sciences, School of Public Health, University of California, Berkeley 94720.
Am J Health Promot. 1992 Jan-Feb;6(3):190-6. doi: 10.4278/0890-1171-6.3.190.
Television is an important source of health information in the United States, yet little research has focused on the presentation of general health issues on television. This preliminary study reports on the health-related content of television commercials found on a typical television day.
We conducted a content analysis of a composite day of television comprising 20 hours randomly selected over a three week period (April-May 1989). Findings are presented regarding health messages found in commercial time--advertisements, public service announcements (PSAs), editorials, and promotions for upcoming programs.
Overall, 31% of the 654 commercial spots contained health messages. Most health messages were claims of good nutrition in food and beverage advertisements. PSAs comprise 1.4% of the 20-hour sample and 5.8% of the commercial time. Health messages appeared in 38% of PSAs, accounting for less than seven minutes. Not one PSA addressed tobacco, alcohol, or diet--the three leading behavioral risk factors for poor health.
PSAs are usually seen as a mechanism by which the public health community can alert the public to important health issues. Given the declining pool of PSA time, public health educators will need to seek alternative strategies for influencing television content, such as media advocacy. In addition, further research on audience interpretation and response to commercial messages is suggested.
在美国,电视是健康信息的重要来源,但针对电视上一般健康问题呈现方式的研究却很少。这项初步研究报告了在一个典型电视日中电视广告里与健康相关的内容。
我们对1989年4月至5月为期三周随机选取的20小时电视节目进行了内容分析。呈现了在商业时段——广告、公益广告、社论以及即将播出节目的宣传中发现的健康信息。
总体而言,654个广告时段中有31%包含健康信息。大多数健康信息是食品和饮料广告中关于良好营养的宣称。公益广告占20小时样本的1.4%,占商业时段的5.8%。健康信息出现在38%的公益广告中,时长不到7分钟。没有一个公益广告涉及烟草、酒精或饮食——这三个导致健康不佳的主要行为风险因素。
公益广告通常被视为公共卫生界向公众警示重要健康问题的一种机制。鉴于公益广告时长不断减少,公共卫生教育工作者将需要寻求影响电视内容的替代策略,如媒体宣传。此外,建议对受众对商业信息的解读和反应进行进一步研究。