Validity and reproducibility of the PERSIAN Cohort food frequency questionnaire: assessment of major dietary patterns.

ABSTRACT:

Background

Dietary patterns, encompassing an overall view of individuals' dietary intake, are suggested as a suitable means of assessing nutrition's role in chronic disease development. The aim of this study was to evaluate the validity and reproducibility of a food frequency questionnaire (FFQ) designed for use in the Prospective Epidemiological Research Studies in IrAN (PERSIAN), by comparing major dietary patterns assessed by the FFQ with a reference method.

Methods

Study participants included men and women who enrolled in the PERSIAN Cohort Study at seven of the eighteen centers. These centers were chosen to include dietary variations observed among the different Iranian ethnic populations. Two FFQ were completed for each participant over a one-year study period (FFQ1 up

SUBMITTER: Eghtesad S 

PROVIDER: S-EPMC10935787 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature