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Uric Acid Variability and All-Cause Mortality: A Prospective Cohort Study in Northern China

  • Original Research
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The journal of nutrition, health & aging

Abstract

Objectives

Uric acid(UA) is related with cardiovascular disease, but the association of UA variability with all-cause mortality is rarely known. This study aimed to investigate the relationship between UA variability and all-cause mortality in Kailuan cohort study in northern China.

Design

Cohort study.

Setting

Kailuan community hospitals in Tangshan, Hebei province, Northern China.

Participants

A total of 55717 participants from Kailuan Study were enrolled, and our study followed up biennially from 2006 to 2010.

Measurements

Clinical records of the participants enrolled were analyzed. UA variation independent of mean (UAVIM) values were calculated and all the participants were quartile grouped into four groups as: Q1(UAVIM<0.68), Q2(0.68≤UAVIM<1.10), Q3(1.10≤UAVIM<1.67) and Q4(UAVIM≥1.67). The endpoint event was all-cause death. Cox regression model was performed to evaluate the hazard ratios(HRs) of all-cause mortality based on UAVIM groups.

Results

During a median follow-up of 6.83 years, 2926 deaths occurred. The accumulated mortality rates were 4.6%, 4.8%, 5.4% and 6.1% in group Q1, Q2, Q3 and Q4 respectively. When adjusted potential confounders, the highest risk for all-cause mortality was in group Q4 and the adjusted HRs and 95% confidence intervals(CIs) of group Q2–Q4 for all-cause death were 1.044(0.937, 1.164), 1.182(1.064, 1.314) and 1.353(1.220, 1.501) compared with group Q1, respectively. Further analysis showed that the risk for all-cause death increased as UAVIM value increased. Sensitive analysis still showed the similar results when excluding participants with hyperuricemia or severe chronic kidney diseases. Sub-group analysis by age, gender, BMI or hypertension history also indicated analogous results.

Conclusion

Elevated UAVIM was related with increased all-cause mortality and UAVIM was an independent risk factor for all-cause mortality in the community cohort study.

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Acknowledgement

The study was supported by the National Natural Science Foundation of China (No 8207020241). The authors thank all the contributions the staff of Kailuan Community Hospitals made to this study.

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Author notes

  1. These two authors contributed equally to this work and should be considered co-first authors.

Authors and Affiliations

  1. The School of Medicine, Nankai University, Nankai District, Tianjin, China

    M. Wang

  2. Department of Cardiology, Chinese People’s Liberation Army General Hospital, Beijing, China

    M. Wang, C. Wang, M. Zhao, Y. Li, S. Yao & Hao Xue

  3. Department of Cardiology, Kailuan Hospital, Hebei United University, Tangshan, China

    Shouling Wu

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  1. M. Wang
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Corresponding authors

Correspondence to Shouling Wu or Hao Xue.

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Conflict of interest: There was no conflict of interest to declare.

Ethical Standards: The Ethics Committee of the Kailuan hospital approved the study.

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Wang, M., Wang, C., Zhao, M. et al. Uric Acid Variability and All-Cause Mortality: A Prospective Cohort Study in Northern China. J Nutr Health Aging 25, 1235–1240 (2021). https://doi.org/10.1007/s12603-021-1706-3

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  • DOI: https://doi.org/10.1007/s12603-021-1706-3

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