Reproducibility and comparison of a digital food frequency questionnaire (DIGIKOST-FFQ) assessing adherence to national diet and lifestyle recommendations.

Autor:	Knudsen MD; Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.; Section for colorectal cancer screening, Cancer Registry of Norway, Oslo, Norway.; Department of Transplantation Medicine, Division of Surgery, Inflammatory Diseases and Transplantation, Oslo University Hospital, Oslo, Norway., Carlsen MH; Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway., Hjartåker A; Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway., Blomhoff R; Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.; Department of Clinical Service, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway., Henriksen HB; Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
Jazyk:	angličtina
Zdroj:	Food & nutrition research [Food Nutr Res] 2024 Aug 26; Vol. 68. Date of Electronic Publication: 2024 Aug 26 (Print Publication: 2024).
DOI:	10.29219/fnr.v68.10366
Abstrakt:	Background: We have developed a digital semi-quantitative food frequency and lifestyle questionnaire, the DIGIKOST-FFQ, based on the validated paper-based NORDIET-FFQ. Objective: The study aims to investigate the reproducibility of the DIGIKOST-FFQ and to compare the DIGIKOST-FFQ against the NORDIET-FFQ for the adjusted questions for intakes of fruits, vegetables, whole grains, fish, meat, and dairy products. Design: Participants were recruited from May to September 2021 through a random sample from the National Population Register and advertisements on Facebook in Norway. In the reproducibility study, the DIGIKOST-FFQ was completed twice by the participants, 1-2 months apart. In the comparison study, the DIGIKOST-FFQ was completed 1-2 months prior to the NORDIET-FFQ. Results: In the reproducibility study, 317 individuals were included. For 12 out of 16 food groups there were no significant differences in intake estimations between the first and second DIGIKOST-FFQ administrations. A small but significant median difference was observed for fruits (6 g/day) and vegetables (24 g/day). Correlations were satisfactory for all items ( r = 0.60-1.00), and in the cross-classification 85% of the participants were classified into the same or adjacent quartile for all items. The comparison study included 81 individuals. Compared to the NORDIET-FFQ a significant median difference was observed for fruits 29 g/day, vegetables 36 g/day, whole grains -10 g/day, and red meat -11 g/day, but not for fish, processed meat, or dairy products. Conclusion: The DIGIKOST-FFQ was able to reproduce diet and lifestyle at the group level. An intended difference for the food groups where questions had been adjusted, was observed between DIGIKOST-FFQ and NORDIET-FFQ in the comparison study. Competing Interests: The authors declare no potential conflicts of interest. The Throne Holst Foundation for Nutrition Research and Aktieselskabet Freia Chocolade Fabriks Medisinske Fond funded this study. The funding sources had no role in the study design, data collection, data analyses, interpretation, or writing of the article. (© 2024 Markus Dines Knudsen et al.)
Databáze:	MEDLINE
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