Back to Search Start Over

Validity and Reproducibility of a Dietary Questionnaire for Consumption Frequencies of Foods during Pregnancy in the Born in Guangzhou Cohort Study (BIGCS)

Authors :
Yu Liu
Ming-Yang Yuan
Xiaoyan Xia
Jian-Rong He
Cui-Yue Hu
Lan Qiu
Wan-Qing Xiao
Songying Shen
Huimin Xia
Huiyun Xiao
Jinhua Lu
Nian-Nian Chen
Fang Hu
Xiu Qiu
Ying-Fang Wu
Yan-Yan Wu
Source :
Nutrients; Volume 8; Issue 8; Pages: 454, Nutrients
Publication Year :
2016
Publisher :
Multidisciplinary Digital Publishing Institute, 2016.

Abstract

This study aimed to examine the reproducibility and validity of a new food frequency questionnaire (FFQ) used in a birth cohort study to estimate the usual consumption frequencies of foods during pregnancy. The reference measure was the average of three inconsecutive 24 h diet recalls (24 HR) administrated between two FFQs, and the reproducibility was measured by repeating the first FFQ (FFQ1) approximately eight weeks later (FFQ2). A total of 210 pregnant women from the Born in Guangzhou Cohort Study (BIGCS) with full data were included in the analysis. The Spearman’s correlation coefficients of FFQ1 and FFQ2 ranged from 0.33 to 0.71. The intraclass correlation coefficients of the two FFQs ranged from 0.22 to 0.71. The Spearman’s correlation coefficients of the 24 HR and FFQ2 ranged from 0.23 to 0.62. Cross-classification analysis showed 65.1% of participants were classified into same and contiguous quintiles, while only 3.2% were misclassified into the distant quintiles. Bland-Altman methods showed good agreement for most food groups across the range of frequencies between FFQ1 and FFQ2. Our findings indicated that the reproducibility and validity of the FFQ used in BIGCS for assessing the usual consumption frequencies of foods during pregnancy were acceptable.

Details

Language :
English
ISSN :
20726643
Database :
OpenAIRE
Journal :
Nutrients; Volume 8; Issue 8; Pages: 454
Accession number :
edsair.doi.dedup.....db2a984b73ad156285a16843b12aa41a
Full Text :
https://doi.org/10.3390/nu8080454