Comparison of weighed food record procedures for the reference methods in two validation studies of food frequency questionnaires.

ABSTRACT:

Background

Although open-ended dietary assessment methods, such as weighed food records (WFRs), are generally considered to be comparable, differences between procedures may influence outcome when WFRs are conducted independently. In this paper, we assess the procedures of WFRs in two studies to describe their dietary assessment procedures and compare the subsequent outcomes.

Methods

WFRs of 12 days (3 days for four seasons) were conducted as reference methods for intake data, in accordance with the study protocol, among a subsample of participants of two large cohort studies. We compared the WFR procedures descriptively. We also compared some dietary intake variables, such as the frequency of foods and dishes and contributing foods, to determine whether there were differenc

SUBMITTER: Ishii Y 

PROVIDER: S-EPMC5498406 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature