Department of Health Sciences.he EMGO Institute for Health and Care Research, Faculty of Earth and Life Sciences, VU University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands.
Health Educ Res. 2010 Feb;25(1):109-20. doi: 10.1093/her/cyp051. Epub 2009 Sep 11.
This qualitative study assessed consumers' opinions of food portion sizes and their attitudes toward portion-size interventions located in various point-of-purchase settings targeting overweight and obese people. Eight semi-structured focus group discussions were conducted with 49 participants. Constructs from the diffusion of innovations theory were included in the interview guide. Each focus group was recorded and transcribed verbatim. Data were coded and analyzed with Atlas.ti 5.2 using the framework approach. Results showed that many participants thought that portion sizes of various products have increased during the past decades and are larger than acceptable. The majority also indicated that value for money is important when purchasing and that large portion sizes offer more value for money than small portion sizes. Furthermore, many experienced difficulties with self-regulating the consumption of large portion sizes. Among the portion-size interventions that were discussed, participants had most positive attitudes toward a larger availability of portion sizes and pricing strategies, followed by serving-size labeling. In general, reducing package serving sizes as an intervention strategy to control food intake met resistance. The study concludes that consumers consider interventions consisting of a larger variety of available portion sizes, pricing strategies and serving-size labeling as most acceptable to implement.
本定性研究评估了消费者对食物份量的看法，以及他们对各种针对超重和肥胖人群的购买点干预措施中份量干预的态度。研究采用半结构焦点小组访谈的形式，对 49 名参与者进行了 8 次讨论。访谈指南中纳入了创新扩散理论的构建。对每个焦点小组的讨论进行了录音和逐字记录。使用 Atlas.ti 5.2 软件，采用框架方法对数据进行编码和分析。结果表明，许多参与者认为过去几十年各种产品的份量增加了，而且比可接受的份量更大。大多数人还表示，在购买时价值是很重要的，而且大份量比小份量更有价值。此外，许多人在自我控制大份量的消费方面遇到了困难。在讨论的份量干预措施中，参与者对更大的份量供应和定价策略最持积极态度，其次是份量标签。一般来说，减少包装份量作为控制食物摄入量的干预策略遭到了抵制。研究得出的结论是，消费者认为更大种类的份量供应、定价策略和份量标签等干预措施最容易实施。
