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Validity and Reproducibility of a Dietary Questionnaire for Consumption Frequencies of Foods during Pregnancy in the Born in Guangzhou Cohort Study (BIGCS)
- 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.
- Subjects :
- Adult
0301 basic medicine
China
Pediatrics
medicine.medical_specialty
Intraclass correlation
food frequency questionnaire
Diet Surveys
Statistics, Nonparametric
Article
Cohort Studies
Food group
Food Preferences
Young Adult
03 medical and health sciences
Pregnancy
medicine
Humans
Dietary Questionnaire
Prospective Studies
Prospective cohort study
validation
Reproducibility
030109 nutrition & dietetics
Nutrition and Dietetics
business.industry
Reproducibility of Results
Food frequency questionnaire
dietary assessment
Maternal Nutritional Physiological Phenomena
medicine.disease
Diet
Food
pregnant women
Female
Self Report
business
Food Science
Demography
Cohort study
Subjects
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