Development and validity of a short web-based semi-quantitative Food Frequency Questionnaire applicable in both clinical and research setting: an evolution over time.

ABSTRACT:

Background

Assessing dietary intake is valuable both in clinical practice and in research. In research and in clinical practice, long-term habitual dietary intake is most often of interest. Therefore, a web-based semi-quantitative Food Frequency Questionnaire (FFQ) was developed to measure habitual intake of nutrients and foods.

Aim

This study aimed to assess content validity, convergent validity, and reliability of a 32-item semi-quantitative FFQ for adults.

Methods

A total of three different cohorts of Flemish adults were recruited in the past 10 years. The first cross-sectional validation study took place in 2013, consequently in 2019 and 2021. Content validity was assessed in 2019 through a semi-structured cognitive interview. Convergent validity was assessed by e

SUBMITTER: Verbeke J 

PROVIDER: S-EPMC10229889 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature