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Introduction <p>Age-standardized incidence rate (ASIR), age-standardized prevalence rate (ASPR), and age-standardized disability-adjusted life years (ASDR) of rheumatoid arthritis (RA) and their trends at the global, regional, and national levels were determined using data from the Global Burden of Disease (GBD) 2021 study.</p> Methods <p>The burden of RA was investigated in relation to age, sex, and sociodemographic index (SDI), drawing upon data from the GBD 2021 study. The ASIR, ASPR, and ASDR at the global, regional, and national levels were extracted. The estimated annual percentage change (EAPC) in the ASIR, ASPR, and ASDR was calculated across all levels from 1990 to 2021, supplemented by cluster and frontier analyses.</p> Results <p>In 2021, there were 17.92&#xa0;million cases of RA globally, with the ASIR increasing from 10.42 to 11.8 cases per 100,000 individuals (EAPC of 0.49 [95% confidence interval: 0.46–0.52]) between 1990 and 2021. This substantial rise was consistently observed across all age and sex strata, Socio-demographic Index quintiles, and Global Burden of Disease regions. The most pronounced increase was in the low-middle SDI quintile in the ASIR for RA between 1990 and 2021. Among 54 GBD regions, the most significant increase was observed in Andean Latin America and Equatorial Guinea.</p> Conclusion <p>By 2021, the global burden of RA was largely concentrated in the low-middle and low SDI quintiles, especially in Andean Latin America and Northern Africa, with the burden continuing to grow. These findings highlight an urgent need for targeted interventions in underserved regions, including enhanced early diagnosis capabilities and equitable access to disease-modifying therapies to mitigate rising disability burdens.</p>

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Rheumatoid arthritis continues to increase in low-middle SDI and low SDI quintiles based on GBD 1990–2021

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月3日

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  • Longhua Fu,
  • Meng Ge,
  • Fangbing Zhu,
  • Weibin Du,
  • Zhenfei Xiong,
  • Zhengcong Ye,
  • Huahui Hu,
  • Shenghu Hong

摘要

Introduction

Age-standardized incidence rate (ASIR), age-standardized prevalence rate (ASPR), and age-standardized disability-adjusted life years (ASDR) of rheumatoid arthritis (RA) and their trends at the global, regional, and national levels were determined using data from the Global Burden of Disease (GBD) 2021 study.

Methods

The burden of RA was investigated in relation to age, sex, and sociodemographic index (SDI), drawing upon data from the GBD 2021 study. The ASIR, ASPR, and ASDR at the global, regional, and national levels were extracted. The estimated annual percentage change (EAPC) in the ASIR, ASPR, and ASDR was calculated across all levels from 1990 to 2021, supplemented by cluster and frontier analyses.

Results

In 2021, there were 17.92 million cases of RA globally, with the ASIR increasing from 10.42 to 11.8 cases per 100,000 individuals (EAPC of 0.49 [95% confidence interval: 0.46–0.52]) between 1990 and 2021. This substantial rise was consistently observed across all age and sex strata, Socio-demographic Index quintiles, and Global Burden of Disease regions. The most pronounced increase was in the low-middle SDI quintile in the ASIR for RA between 1990 and 2021. Among 54 GBD regions, the most significant increase was observed in Andean Latin America and Equatorial Guinea.

Conclusion

By 2021, the global burden of RA was largely concentrated in the low-middle and low SDI quintiles, especially in Andean Latin America and Northern Africa, with the burden continuing to grow. These findings highlight an urgent need for targeted interventions in underserved regions, including enhanced early diagnosis capabilities and equitable access to disease-modifying therapies to mitigate rising disability burdens.