Bell R A, Wilkes M S, Kravitz R L
Department of Communication, University of California, Davis 95616, USA.
J Fam Pract. 2000 Dec;49(12):1092-8.
The case for direct-to-consumer (DTC) prescription drug advertising has often been based on the argument that such promotions can educate the public about medical conditions and associated treatments. Our content analysis of DTC advertising assessed the extent to which such educational efforts have been attempted.
We collected advertisements appearing in 18 popular magazines from 1989 through 1998. Two coders independently evaluated 320 advertisements encompassing 101 drug brands to determine if information appeared about specific aspects of the medical conditions for which the drug was promoted and about the treatment (mean kappa reliability=0.91). We employed basic descriptive statistics using the advertisement as the unit of analysis and cross-tabulations using the brand as the unit of analysis.
Virtually all the advertisements gave the name of the condition treated by the promoted drug, and a majority provided information about the symptoms of that condition. However, few reported details about the condition's precursors or its prevalence; attempts to clarify misconceptions about the condition were also rare. The advertisements seldom provided information about the drug's mechanism of action, its success rate, treatment duration, alternative treatments, and behavioral changes that could enhance the health of affected patients.
Informative advertisements were identified, but most of the promotions provided only a minimal amount of information. Strategies for improving the educational value of DTC advertisements are considered.
直接面向消费者(DTC)的处方药广告的理由通常基于这样的观点,即此类促销活动可以让公众了解医疗状况及相关治疗方法。我们对DTC广告的内容分析评估了此类教育努力的程度。
我们收集了1989年至1998年期间在18种流行杂志上刊登的广告。两名编码员独立评估了涵盖101个药品品牌的320则广告,以确定是否出现了有关所宣传药物适用的医疗状况的具体方面以及治疗方法的信息(平均卡帕可靠性=0.91)。我们以广告为分析单位采用基本描述性统计,以品牌为分析单位采用交叉列表。
几乎所有广告都给出了所宣传药物治疗的病症名称,大多数提供了该病症症状的信息。然而,很少有广告报道该病症的先兆或患病率细节;澄清对该病症误解的尝试也很少见。广告很少提供有关药物作用机制、成功率、治疗持续时间、替代治疗方法以及可改善受影响患者健康的行为改变等信息。
我们识别出了提供信息的广告,但大多数促销活动提供的信息极少。我们考虑了提高DTC广告教育价值的策略。