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1. Formulas developed based on the ratio of urea nitrogen to creatinine concentrations obtained from multiple spot urine samples are acceptable to predict protein intake at group level but not at individual level

Author:
Xiaoyi Yuan; Kentaro Murakami; Keiko Asakura; Ken Uechi; Shizuko Masayasu; Satoshi Sasaki
Source:
Nutrition research 2020 v.78 pp. 50-59
ISSN:
0271-5317
Subject:
creatinine; excretion; men; protein intake; standard deviation; t-test; urea nitrogen; urine; women; Japan
Abstract:
... In this study, we hypothesized that spot urine can be used to predict protein intake at both group and individual levels. Participants (n = 369) of this study were recruited from all 47 prefectures in Japan. Sex-specific formulas were developed based on the ratio of urea nitrogen to creatinine concentration obtained from 3 spot urine samples. Validity of the formulas was examined against two 24-ho ...
DOI:
10.1016/j.nutres.2020.04.004