TY - JOUR AU - Salvesen, L. AU - Hillesund, E. R. AU - Vik, F. N. AU - Brantsæter, A. L. AU - Øverby, N. C. PY - 2019 DA - 2019/11/07 TI - Reproducibility and relative validity of a newly developed web-based food-frequency questionnaire for assessment of preconception diet JO - BMC Nutrition SP - 47 VL - 5 IS - 1 AB - The importance of diet and nutrition during preconception age is a window of opportunity to promote future parental and transgenerational health. As a sub-study to a large Norwegian study, ‘Diet today – health of tomorrow’, a food-frequency questionnaire (FFQ) was developed to assess diet during the preconception phase in young adults aged 20 – 30 years and in this paper we report the reproducibility and relative validity of this questionnaire. SN - 2055-0928 UR - https://doi.org/10.1186/s40795-019-0310-y DO - 10.1186/s40795-019-0310-y ID - Salvesen2019 ER -