Details

Autor(en) / Beteiligte

• Murakami, Kentaro
• Sasaki, Satoshi
• Takahashi, Yoshiko
• Uenishi, Kazuhiro

Titel

Monetary cost of self-reported diet in relation to biomarker-based estimates of nutrient intake in young Japanese women

Ist Teil von

• Public health nutrition, 2009-08, Vol.12 (8), p.1290-1297

Ort / Verlag

Cambridge, UK: Cambridge University Press

Erscheinungsjahr

2009

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• All previous studies on monetary diet cost have examined the relationship of monetary cost of self-reported diet to self-reported, rather than biomarker-based, estimates of dietary intake. The present cross-sectional study examined the association between monetary costs of self-reported diet and biomarker-based estimates of nutrient intake. Monetary diet cost (Japanese yen/1000 kJ) was calculated based on dietary intake information from a self-administered, comprehensive diet history questionnaire using retail food prices. Biomarker-based estimates of nutrient intake (percentage of energy for protein and mg/1000 kJ for K and Na) were estimated based on 24 h urinary excretion and estimated energy expenditure. A total of fifteen universities and colleges in Japan. A total of 1046 female Japanese dietetic students aged 18-22 years. Total monetary diet cost showed a significant positive association with biomarker-based estimates of protein, K and Na. Vegetables and fish were not only the main contributors to total monetary diet cost (16.4 % and 15.5 %, respectively) but also were relatively strongly correlated with total monetary diet cost (Pearson's correlation coefficient: 0.70 and 0.68, respectively). Monetary cost of vegetables was significantly positively associated with all three nutrients, while that of fish showed a significant and positive association only with protein. Total monetary cost of self-reported diet was positively associated with biomarker-based estimates of protein, K and Na intake in young Japanese women, and appeared mainly to be explained by the monetary costs of vegetables and fish.