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Prevalence of autoimmune pancreatitis in Japan from a nationwide survey in 2002

  • Epidemiology
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Abstract

Background

Because autoimmune pancreatitis is a new disease entity, there are no data with regard to its prevalence.

Methods

To estimate the number of patients with autoimmune pancreatitis in Japan, we randomly selected hospitals using stratification and asked them how many patients they had with pancreatitis in 2002 who fulfilled the diagnostic criteria for autoimmune pancreatitis as proposed by the Japan Pancreas Society.

Results

The number of patients with autoimmune pancreatitis who visited hospitals in Japan in 2002 was approximately 900 (95% confidence interval; range 670–1100). The male : female ratio was 2.85 : 1, and the age of disease onset in 95% of the patients was over 45 years.

Conclusions

The prevalence of patients with autoimmune pancreatitis in Japan was estimated to be 0.82 per 100 000. Autoimmune pancreatitis was predominantly seen in men past middle age (over the age of 45 years).

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Author information

Authors and Affiliations

  1. Department of Gastroenterology and Hepatology, Kochi Medical School, Nankoku, Kochi, 783-8505, Japan

    Isao Nishimori

  2. Division of Clinical Trials, National Center for Geriatrics and Gerontology, Aichi, Japan

    Akiko Tamakoshi

  3. Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health Japan, Kitakyushu, Japan

    Makoto Otsuki

Authors
  1. Isao Nishimori
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  2. Akiko Tamakoshi
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  3. Makoto Otsuki
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Consortia

the Research Committee on Intractable Diseases of the Pancreas, Ministry of Health, Labour, and Welfare of Japan

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Nishimori, I., Tamakoshi, A., Otsuki, M. et al. Prevalence of autoimmune pancreatitis in Japan from a nationwide survey in 2002. J Gastroenterol 42 (Suppl 18), 6–8 (2007). https://doi.org/10.1007/s00535-007-2043-y

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  • DOI: https://doi.org/10.1007/s00535-007-2043-y

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