Reasons for the decrease in the number of dialysis patients throughout Japan in 2022

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  • Nakai Shigeru
    Committee of Renal Data Registry, Japanese Society for Dialysis Therapy Faculty of Nursing, Fujita Health University School of Health Sciences
  • Kikuchi Kan
    Committee of Renal Data Registry, Japanese Society for Dialysis Therapy Division of Nephrology, Shimoochiai Clinic
  • Wakai Kenji
    Department of Preventive Medicine, Nagoya University Graduate School of Medicine
  • Wada Atsushi
    Committee of Renal Data Registry, Japanese Society for Dialysis Therapy Department of Nephrology, Kitasaito Hospital
  • Abe Masanori
    Committee of Renal Data Registry, Japanese Society for Dialysis Therapy Division of Nephrology, Hypertension and Endocrinology, Department of Medicine, Nihon University School of Medicine
  • Hanafusa Norio
    Committee of Renal Data Registry, Japanese Society for Dialysis Therapy Department of Blood Purification, Tokyo Womenʼs Medical University

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  • 統計調査委員会報告　2022年末慢性透析患者数“減少”の背景を分析する
  • トウケイ チョウサ イインカイ ホウコク 2022 ネンマツ マンセイ トウセキ カンジャスウ"ゲンショウ"ノ ハイケイ オ ブンセキ スル

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Abstract

<p>[Purpose] We sought to clarify the reasons for the decrease in the total number of dialysis patients in Japan in 2022. [Subject] Survey values for each year were obtained using the Web-based Analysis of Dialysis Data Archives (WADDA) system. These values were then adjusted for response rates based on the number of facilities. General population statistics for Japan were obtained from e-Stat of the Statistics Bureau, Ministry of Internal Affairs and Communications. [Methods] We compared the prevalence, morbidity, and mortality rates of dialysis patients according to sex and age. We also examined trends in the number of deaths by major causes of death. [Results] The prevalence rates of dialysis among people aged≥65 years, which had been on the rise before 2020, have been decreasing since 2020. Morbidity rates have consistently decreased. Mortality rates, which had been decreasing before 2020, increased for all ages after 2020. Since 2020, the number of deaths due to infectious diseases and the number of deaths due to coronavirus disease 2019 (COVID-19) pneumonia have rapidly increased. [Conclusion] The decrease in the number of dialysis patients in Japan in 2022 could be attributed to an increase in the number of deaths due to COVID-19 pneumonia after 2020.</p>

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