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TL;DR
This study describes the development of the Swiss eFFQ, a web-based food frequency questionnaire designed for the culturally diverse adult population of Switzerland.
Nutrients · 6 authors, 3 centres
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This study describes the development of the Swiss eFFQ, a web-based food frequency questionnaire designed for the culturally diverse adult population of Switzerland.
The study details the iterative development of the Swiss eFFQ, a semiquantitative, multilingual, web-based tool for dietary assessment in Swiss adults. The process included content identification, construction, pretesting, and translation. A stepwise regression analysis identified foods contributing to >90% of the variance in intake of energy and six nutrients. All 118 foods identified in the overall cohort or in any Swiss linguistic region were standardized into a final 83-item food list. The tool uses standard portion sizes and automates intake calculation via linked food composition databases. Limitations include reliance on 2014–2015 data, incomplete translation to Italian, and potential biases in self-reporting and development. The paper presents the methodology for a tool intended to enable rapid, low-cost dietary data collection for epidemiological studies.