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Trends in associations between socioeconomic development and urban–rural disparity with high blood pressure in Chinese children and adolescents over two decades

Abstract

This study aimed to assess the association between the trend of urban–rural disparity in high blood pressure (HBP) in Chinese children and adolescents and socioeconomic development. Data on 1,054,602 students aged 7–18 years were obtained from five successive national surveys administered in 29 Chinese provinces in 1995, 2000, 2005, 2010, and 2014. HBP was defined as average measured systolic BP and/or diastolic BP equal to or more than 95th percentile. The socioeconomic indicators at the provincial-level included gross domestic product (GDP) per capita, the Engel coefficient, and urbanization rates. From 1995 to 2014, HBP prevalence in Chinese children and adolescents fluctuated between 6.9% and 9.2%. Rural areas had a higher prevalence of HBP than urban areas, with a diminishing trend in urban–rural disparity from 1995 to 2010 with a reduced OR from 1.45 (95% CI: 1.40–150) in 1995 to 1.09 (1.05–1.12) in 2010, whereas a widening gap in 2014 with OR of 1.23 (1.19–1.26)). A positive association existed between the improvement of socioeconomic indicators and the increase in HBP, which was demonstrated obviously by the Engel coefficient strata. The increases in the urbanization rates were accompanied by a greater increase of HBP in urban than in rural areas. The large urban–rural disparity suggests a priority of HBP control in rural children due to their current and future HBP and cardiovascular disease risks. Socioeconomic development could affect the urban–rural disparity in HBP risk, reflecting the importance of effective policy responses for preventing HBP by avoiding unhealthy lifestyles brought about by rapid economic development.

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Fig. 1: The secular trends for urban–rural disparity in HBP, SHBP and DHBP for ORs (rural versus urban) among Chinese children and adolescents in different survey years from 1995 to 2014.
Fig. 2: Correlation between the prevalence of HBP, SHBP, and DHBP and socioeconomic indicators among Chinese children and adolescents.
Fig. 3: Comparison analysis between urban and rural areas for association between socioeconomic indicators and HBP, SHBP and DHBP.

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Availability of data and material

The datasets and result computational code used and analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors would like to acknowledge the support from all the team members and the participated students, teachers, parents, and local education and health staff in the programs.

Funding

The present study was supported by the National Natural Science Foundation (Grant 81673192 to Jun Ma) and Humanities and Social Sciences Planning Fund Project, Ministry of Education, People’s Republic of China (Grant 19YJA890022 to Yi Song), as well as project funded by the China Postdoctoral Science Foundation (National Postdoctoral Program for Innovative Talent, BX20200019 and 2020M680266 to Yanhui Dong). The funders did not play any roles in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript.

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Contributions

DYH conceptualized and designed the study, completed the statistical analyses, drafted the initial manuscript, and reviewed and revised the manuscript; MJ and SY contributed to the conceptualization and design of the study, supervised the data collection, the statistical analyses, and initial drafting of the manuscript, and reviewed and revised the manuscript; MC, BS, YL, DG, BW and assisted with the statistical analyses and reviewed the manuscript. All authors read and approved the final version of the manuscript.

Corresponding authors

Correspondence to Yi Song or Jun Ma.

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The authors declare no competing interests.

Ethics approval and consent to participate

Informed consent was obtained from both parents and students before they participated in the study. The project was approved by the Medical Research Ethics Committee of Peking University Health Science Center (IRB00001052-13082).

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We have obtained consent to publish from both children and parents to report their data uninvolved in their privacy.

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Dong, Y., Chen, M., Sun, B. et al. Trends in associations between socioeconomic development and urban–rural disparity with high blood pressure in Chinese children and adolescents over two decades. J Hum Hypertens 36, 866–874 (2022). https://doi.org/10.1038/s41371-021-00592-7

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