View the label before you view the movie: A field experiment into the impact of Portion size and Guideline Daily Amounts labelling on soft drinks in cinemas

<p>Abstract</p> <p>Background</p> <p>Large soft drink sizes increase consumption, and thereby contribute to obesity. Portion size labelling may help consumers to select more appropriate food portions. This study aimed to assess the effectiveness of portion size and caloric Guidelines for Daily Amounts (GDA) labelling on consumers' portion size choices and consumption of regular soft drinks.</p> <p>Methods</p> <p>A field experiment that took place on two subsequent evenings in a Dutch cinema. Participants (n = 101) were asked to select one of five different portion sizes of a soft drink. Consumers were provided with either portion size and caloric GDA labelling (experimental condition) or with millilitre information (control condition).</p> <p>Results</p> <p>Labelling neither stimulated participants to choose small portion sizes (<it>OR </it>= .75, <it>p </it>= .61, CI: .25 - 2.25), nor did labelling dissuade participants to choose large portion sizes (<it>OR </it>= .51, <it>p </it>= .36, CI: .12 - 2.15).</p> <p>Conclusions</p> <p>Portion size and caloric GDA labelling were found to have no effect on soft drink intake. Further research among a larger group of participants combined with pricing strategies is required. The results of this study are relevant for the current public health debate on food labelling.</p

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Sharing data offers opportunities to make research into older person care more efficient. However, this is not yet common practice in the Netherlands. To optimally utilize the potential of data sharing, insight into factors that promote the implementation of data sharing in older person care research is important. In the TOPICS-MDS project, research data from the National Program for Older Person Care (NPO) was collected, managed and reused on a large scale. The experiences of stakeholders involved in this project can teach us more about the needs researchers have when sharing their data. For this study, we interviewed 23 people involved in different ways in data sharing in TOPICS-MDS about their experiences in the data sharing process. Thematic analysis yielded four overarching themes, which we converted into the following lessons: those who want to promote data sharing must ensure 1) visibility of the added value of data sharing, 2) trust in the database, 3) transparency of the process and 4) communication. These lessons complement the results of previous research with concrete advice. Optimizing data sharing in older person research is both promising and challenging. It requires dedication and involvement from both the researcher and the research participant, and appreciation for both.</p