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Journal of Gastroenterology

, Volume 42, Supplement 18, pp 6–8 | Cite as

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

  • Isao Nishimori
  • Akiko Tamakoshi
  • Makoto Otsuki
  • the Research Committee on Intractable Diseases of the Pancreas, Ministry of Health, Labour, and Welfare of Japan
Epidemiology

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).

Key words

autoimmune pancreatitis nationwide survey prevalence epidemiology 

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References

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    Otsuki, M 2004Chronic pancreatitis. The problems of diagnostic criteriaPancreatology42841PubMedCrossRefGoogle Scholar
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    Nishimori, I, Tamakoshi, A, Kawa, S, Tanaka, S, Takeuchi, K, Kamisawa, T,  et al. 2006Influence of steroid therapy on the course of diabetes mellitus in patients with autoimmune pancreatitisPancreas322448PubMedCrossRefGoogle Scholar
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    Ohno, Y 1998The nationwide epidemiological survey manual for investigating the number of patients and clinico-epidemiological features of intractable diseases (in Japanese)Japanese Ministry of Health and WelfareTokyoGoogle Scholar

Copyright information

© Springer-Verlag Tokyo 2007

Authors and Affiliations

  • Isao Nishimori
    • 1
  • Akiko Tamakoshi
    • 2
  • Makoto Otsuki
    • 3
  • the Research Committee on Intractable Diseases of the Pancreas, Ministry of Health, Labour, and Welfare of Japan
  1. 1.Department of Gastroenterology and HepatologyKochi Medical SchoolNankokuJapan
  2. 2.Division of Clinical TrialsNational Center for Geriatrics and GerontologyAichiJapan
  3. 3.Department of Gastroenterology and MetabolismUniversity of Occupational and Environmental Health JapanKitakyushuJapan

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