A meta-analysis of the reproducibility of food frequency questionnaires in nutritional epidemiological studies.

ABSTRACT:

Background

Reproducibility of FFQs measures the consistency of the same subject at different time points. We performed a meta-analysis to explore the reproducibility of FFQs and factors related to reproducibility of FFQs.

Methods and findings

A systematic literature review was performed before July 2020 using PubMed and Web of Science databases. Pooled intraclass and Spearman correlation coefficients (95% confidence interval) were calculated to assess the reproducibility of FFQs. Subgroup analyses based on characteristics of study populations, FFQs, or study design were performed to investigate factors related to the reproducibility of FFQs. A total of 123 studies comprising 20,542 participants were eligible for the meta-analysis. The pooled crude intraclass correlation coef

SUBMITTER: Cui Q 

PROVIDER: S-EPMC7802360 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature