- Title
- Measuring practical knowledge about balanced meals: development and validation of the brief PKB-7 scale
- Creator
- Mötteli, S.; Barbey, J.; Keller, C.; Bucher, T.; Siegrist, M.
- Relation
- European Journal of Clinical Nutrition Vol. 70, Issue 4, p. 505-510
- Publisher Link
- http://dx.doi.org/10.1038/ejcn.2015.173
- Publisher
- Nature Publishing Group
- Resource Type
- journal article
- Date
- 2016
- Description
- Background/Objectives: As a high-quality diet is associated with a lower risk for several diseases and all-cause mortality, current nutrition education tools provide people with information regarding how to build a healthy and a balanced meal. To assess this basic nutrition knowledge, the research aim was to develop and validate a brief scale to measure the Practical Knowledge about Balanced meals (PKB-7). Subjects/Methods: A pool of 25 items was pretested with experts and laypeople before being tested on a random sample in Switzerland (n=517). For item selection, a Rasch model analysis was applied. The validity and reliability of the new scale were assessed by three additional studies including laypeople (n=597; n=145) and nutrition experts (n=59). Results: The final scale consists of seven multiple-choice items, which met the assumptions of the Rasch model. The validity of the new scale was shown by several aspects: the Rasch model was replicated in a second study, and nutrition experts achieved significantly higher scores than laypeople (t(148)=20.27, P<0.001, d=1.78). In addition, the PKB-7 scale was correlated with other nutrition-related constructs and associated with reported vegetable consumption. Test-retest reliability (r=0.68, P<0.001) was acceptable. Conclusions: The PKB-7 scale is a reliable and a valid Rasch-based instrument in Swiss citizens aged between 18 and 80 years for measuring the practical knowledge about balanced meals based on current dietary guidelines. This brief and easy-to-use scale is intended for application in both research and practice.
- Subject
- balanced meals; high-quality diet; nutrition
- Identifier
- http://hdl.handle.net/1959.13/1320099
- Identifier
- uon:24064
- Identifier
- ISSN:0954-3007
- Language
- eng
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