Validity of Nutrient Intakes Derived from an Internet Website Dish-Based Dietary Record for Self-Management of Weight among Japanese Women

We compared the relative validity of nutrient intakes derived from Internet website dish-based dietary records (WDDRs) and weighed dietary records (DRs). The study participants were 218 registered users of a dietary management website. After excluding 55 participants, a total of 163 participants wer...

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Bibliographic Details
Published in:Nutrients 2017-09, Vol.9 (10), p.1058
Main Authors: Matsuzaki, Eri, Michie, Mikiko, Kawabata, Terue
Format: Article
Language:English
Subjects:
Adult
Body mass
Body Mass Index
Body size
Body Weight
Carbohydrates
Correlation coefficients
Diet Records
dish-based dietary record
Eating
Energy
Energy Intake
Female
Humans
Intakes
Internet
Japan
Middle Aged
Minerals
nutrient intakes
Nutrients
Nutrition Assessment
Nutritional Status
Nutritive Value
Self-Management - methods
Sodium
Systematic errors
Tocopherol
validity
Vitamin A
Vitamin E
Vitamins
web
Websites
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Summary:We compared the relative validity of nutrient intakes derived from Internet website dish-based dietary records (WDDRs) and weighed dietary records (DRs). The study participants were 218 registered users of a dietary management website. After excluding 55 participants, a total of 163 participants were included in the final analyses. The participants were Japanese women, and their mean age and mean body mass index (BMI) were 39.3 (±10.3) years and 22.3 (±3.7) years, respectively. We compared differences in the DR and WDDR with respect to intakes of energy and 13 nutrients. The median values for the intake of protein and seven nutrients showed no significant difference between the DR and WDDR, and the estimated values were generally similar. The interquartile range of nutrients with a significant difference did not show a large deviation, with the exception of vitamin A. Correlation coefficients showed a strong correlation of 0.7, with the exception of sodium and vitamin E. The kappa coefficients for energy and for some nutrients were good to fair. Using Bland-Altman plots, we found proportional errors in the intake values for vitamins and minerals. We could not confirm obvious systematic errors for energy, protein, fat, or carbohydrate intake. WDDR use is considered to be a valid method for estimating energy and nutrient intakes among Japanese women.
ISSN:2072-6643
2072-6643
DOI:10.3390/nu9101058