1. Urinary Creatinine Concentrations and Its Explanatory Variables in General Chinese Population: Implications for Creatinine Limits and Creatinine Adjustment.
- Author
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JI, Sai Sai, LYU, Yue Bin, QU, Ying Li, HU, Xiao Jian, LU, Yi Fu, CAI, Jun Fang, SONG, Shi Xun, ZHANG, Xu, LIU, Ying Chun, YANG, Yan Wei, ZHANG, Wen Li, LI, Ya Wei, ZHANG, Ming Yuan, CHEN, Chen, LI, Cheng Cheng, LI, Zheng, GU, Heng, LIU, Ling, CAI, Jia Yi, and QIU, Tian
- Subjects
CHINESE people ,DIASTOLIC blood pressure ,CREATININE ,GLOMERULAR filtration rate ,CHRONIC kidney failure - Abstract
The study aimed to analyze the applicability of the World Health Organization's exclusionary guidelines for Urinary creatinine (Ucr) in the general Chinese population, and to identify Ucr related factors. We conduct a cross-sectional study using baseline data from 21,167 participants in the China National Human Biomonitoring Program. Mixed linear models and restricted cubic splines (RCS) were used to analyze the associations between explanatory variables and Ucr concentration. The geometric mean and median concentrations of Ucr in the general Chinese population were 0.90 g/L and 1.01 g/L, respectively. And 9.36% samples were outside 0.3–3.0 g/L, including 7.83% below the lower limit and 1.53% above the upper limit. Middle age, male, obesity, smoking, higher frequency of red meat consumption and chronic kidney disease were associated significantly with higher concentrations of Ucr. Results of the RCS showed Ucr was positively and linearly associated with body mass index, inversely and linearly associated with systolic blood pressure, diastolic blood pressure, triglycerides level, and glomerular filtration rate, and were non-linearly associated with triiodothyronine. The age- and gender-specific cut-off values of Ucr that determine the validity of urine samples in the general Chinese population were recommended. To avoid introducing bias into epidemiologic associations, the potential predictors of Ucr observed in the current study should be considered when using Ucr to adjust for variations in urine dilution. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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