Validity and reliability of a semi-quantitative food frequency questionnaire in groups at high risk for cardiovascular diseases.

ABSTRACT:

Background

Diet is a modifiable risk factor for cardiovascular diseases (CVD), but there is still a lack of tools to assess dietary intakes of this high-risk population in Ningxia, China.

Objective

We aim to evaluate the validity and reliability of the semi-quantitative food frequency questionnaire (SFFQ) in the groups in Ningxia using a 24-hour dietary recall method.

Method

Two hundred five participants were included in the analysis. The two FFQs were 6 months apart, and during this time two 24-hour dietary recalls (24HDRs) were completed. Statistical methods were compared using inter-class correlation coefficient, unadjusted, energy-adjusted, de-attenuated correlation coefficient, quartile classification, weighted K values, and 95% limits of agreement (LOA).

Resu

SUBMITTER: Yan N 

PROVIDER: S-EPMC9569079 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature