Reproducibility and Validity of a Semi-Quantitative Food Frequency Questionnaire for Children Aged 6-12 in Western China.

ABSTRACT: The Food Frequency Questionnaire (FFQ) is often used to assess dietary intake in large-scale epidemiological studies. This study aimed to evaluate the reproducibility and validity of the FFQ newly developed for children aged 6 to 12 in western China. A total of 133 children were included in the analysis, and all the children and their caregivers completed the FFQs twice with a three-month interval period, and three 24 h recalls were carried out one month after the first FFQ. We assessed the relative validity and reproducibility using various methods, such as the Spearman correlation coefficient, intra-class correlation coefficient, weighed Kappa, quartile agreement, and Bland-Altman analysis. The Spearman correlation coefficients for food ranged from 0.30 to 0.84, and for nutrients from 0.

SUBMITTER: Qin Y 

PROVIDER: S-EPMC9959506 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature