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Trends and Patterns of Knee Osteoarthritis in China: A Longitudinal Study of 17.7 Million Adults from 2008 to 2017

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  • Hongbo Chen

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
    School of Nursing, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
    These authors contributed equally to this work.)

  • Junhui Wu

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
    These authors contributed equally to this work.)

  • Zijing Wang

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Yao Wu

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Tao Wu

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Yiqun Wu

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Mengying Wang

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Siyue Wang

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Xiaowen Wang

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Jiating Wang

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Huan Yu

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Yonghua Hu

    (Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
    Medical Informatics Center, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

  • Shaomei Shang

    (School of Nursing, Peking University, No. 38 Xueyuan Road, Beijing 100191, China)

Abstract

Background: Knee osteoarthritis (KOA) provides many challenges on the healthcare system. However, few studies have reported the epidemiology, particularly in a large population. Our study aimed to estimate the prevalence, incidence, trends, and patterns of diagnosed KOA in China. Methods: This was a longitudinal study. We used health insurance claims of 17.7 million adults from 2008–2017 to identify people with KOA. Trends in prevalence and incidence were analyzed using joinpoint regression. Results: We identified 2,447,990 people with KOA in Beijing, 60% of which were women. The 10-year average age-standardized prevalence and incidence of KOA was, respectively, 4.6% and 25.2 per 1000 person-years. Prevalence increased with age, surging after 55 years old. The average crude prevalence was 13.2% for people over 55 years old. The prevalence showed an increasing trend from 2008 to 2017, including a period of rapid rise from 2008 to 2011 ( p < 0.05); the increase in prevalence was greatest in people under 35 years old ( p < 0.05). Conclusion: Our analyses showed that the annual prevalence rate of KOA increased significantly from 2008 to 2017 in China. We need to increase our attention to women and the elderly over 55 years old, and also be alert to the younger trend of incidence of KOA.

Suggested Citation

  • Hongbo Chen & Junhui Wu & Zijing Wang & Yao Wu & Tao Wu & Yiqun Wu & Mengying Wang & Siyue Wang & Xiaowen Wang & Jiating Wang & Huan Yu & Yonghua Hu & Shaomei Shang, 2021. "Trends and Patterns of Knee Osteoarthritis in China: A Longitudinal Study of 17.7 Million Adults from 2008 to 2017," IJERPH, MDPI, vol. 18(16), pages 1-10, August.
  • Handle: RePEc:gam:jijerp:v:18:y:2021:i:16:p:8864-:d:619733
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    References listed on IDEAS

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    1. Xueshan Sun & Xuemei Zhen & Xiaoqian Hu & Yuanyuan Li & Shuyan Gu & Yuxuan Gu & Hengjin Dong, 2019. "Osteoarthritis in the Middle-Aged and Elderly in China: Prevalence and Influencing Factors," IJERPH, MDPI, vol. 16(23), pages 1-18, November.
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