Validation of a New Food Frequency Questionnaire for Assessment of Calcium and Vitamin D Intake in Korean Women
Journal of Bone Metabolism
;
: 67-74, 2013.
Article
in English
| WPRIM
| ID: wpr-159894
ABSTRACT
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Vitamin D
/
Vitamins
/
Diet Surveys
/
Nutrition Surveys
/
Calcium
/
Surveys and Questionnaires
/
Dairy Products
/
Korea
/
Methods
Limits:
Female
/
Humans
Country/Region as subject:
Asia
Language:
English
Journal:
Journal of Bone Metabolism
Year:
2013
Type:
Article
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