Validation of a digital food frequency questionnaire for the Northern Sweden Diet Database.

• Published in: Nutrition Journal
• Main Authors: Wennberg, Maria, Kastenbom, Lisa, Eriksson, Linda, Winkvist, Anna, Johansson, Ingegerd
• Format: Report
• Language: English
• Published: BioMed Central 2024
• Subjects: FFQ2020; Food frequency questionnaire; Northern Sweden Diet Database; Reproducibility; Validity; Northern Sweden
• Online Access: https://doi.org/10.1186/s12937-024-00984-8; https://pubmed.ncbi.nlm.nih.gov/39049045; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11267735/

Dietary habits strongly influence health, with poor diets contributing to numerous deaths annually. Addressing this requires improved dietary habits and consistent monitoring thereof. In northern Sweden, a validated food frequency questionnaire (FFQ) has been used for decades, but trends show that its ability to accurately measure intake has diminished. With changing eating habits and food supply, updating the FFQ was crucial, leading to the development of FFQ2020. This study assessed FFQ2020's relative validity using 24-hour recalls and evaluated its reproducibility.