Validation of a New Food Frequency Questionnaire for Assessment of Calcium and Vitamin D Intake in Korean Women
Overview
Authors
Affiliations
Background: Validated simple calcium questionnaires are available to assess the intake of calcium and vitamin D in western countries, but they are not appropriate for Koreans since dairy products are not the major source of calcium and vitamin D in Korea. Thus, the objective of the present study was to develop and validate a simple and easy food frequency questionnaire (FFQ) of calcium and vitamin D for Korean.
Methods: Two hundred and fifty-six women were asked to complete the validated FFQ used by the Korean National Health and Nutrition Examination Survey (KNHANES) and a newly developed FFQ, the Korean Calcium Assessment Tool (KCAT), which contain the 7 food groups with 24 categories of 45 food items that are consumed frequently by Koreans.
Results: Calcium intake was not significantly different between the two methods; Pearson's correlation coefficient of 0.98 indicated a positive correlation, and Cohen's kappa coefficient of 0.78 indicated the subjects were correctly classified. Bland-Altman plot also showed that the mean differences of the calcium intake as assessed by the two methods were in high agreement. However, the vitamin D intake assessed by KCAT was significantly higher than that assessed by the FFQ used in KNHANES. The vitamin D intakes as assessed by the two methods were positively correlated but the two methods were in moderate agreement.
Conclusions: The results suggested that the newly developed KCAT was a valid tool for assessing the calcium intake in Korean women, but it might overestimate the vitamin D intake.
Shin H, Song S, Ly S Nutr Res Pract. 2024; 18(6):872-884.
PMID: 39651325 PMC: 11621432. DOI: 10.4162/nrp.2024.18.6.872.
Dairy intake screener as web-based application is reliable and valid.
Piderit M, White Z, Becker P, Wenhold F Food Sci Nutr. 2024; 12(8):5932-5941.
PMID: 39139933 PMC: 11317722. DOI: 10.1002/fsn3.4187.
Zouine N, Lhilali I, Menouni A, Godderis L, El Midaoui A, El Jaafari S Nutrients. 2023; 15(4).
PMID: 36839154 PMC: 9967684. DOI: 10.3390/nu15040796.
Validation of the food frequency questionnaire for the assessment of dietary vitamin D intake.
Hribar M, Zlavs K, Pravst I, Zmitek K Front Nutr. 2022; 9:950874.
PMID: 36211494 PMC: 9537601. DOI: 10.3389/fnut.2022.950874.
Ahmed S, Rahman T, Ripon M, Rashid H, Kashem T, Md Ali M Nutrients. 2021; 13(12).
PMID: 34960076 PMC: 8707927. DOI: 10.3390/nu13124521.