Reproducibility and relative validity of a newly developed web-based food-frequency questionnaire for assessment of preconception diet.

ABSTRACT:

Background

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.

Methods

The FFQ was developed from an existing FFQ validated in adolescents. Participants were recruited on social media and at a university. Reproducibility was assessed by comparing the test and retest of the FFQ. Relative validity was assessed by comparing intake measured by the FFQ with a 7-day weighed food record. Ener

SUBMITTER: Salvesen L 

PROVIDER: S-EPMC7050769 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature