ORIGINAL ARTICLES
Epidemiology of Japanese cedar pollinosis throughout Japan

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Background

Japanese cedar pollinosis (JCP) is a common disease posing a major public health problem in Japan. For health care policy planning and development of new treatment modalities, investigation of the accurate prevalence and current status of JCP nationwide is imperative.

Objective

To ascertain the prevalence and the current status of JCP in Japan with use of a cross-sectional random sampling method.

Methods

In a nationwide survey conducted shortly after the peak pollen season, self-evaluation questionnaire were mailed to 10,920 subjects from 390 of 3,370 places in 12 regions in Japan.

Results

The response rate was 53.7%, and the usable response rate was 51.5%. The age-adjusted prevalence was 19.4%; the estimated prevalence was 13.1% after adjustment for misdiagnosis, incorrect answers, response rate, and case mix. JCP was most prevalent in the Kanto, Tokai, and Kinki areas and in working adults rather than in children or subjects ages 60 to 79 years. Total pollen count during the pollen season correlated well with the prevalence of JCP in individual regions. In subjects with JCP, nasal symptom were more severe than eye symptoms, 62.5% had severe or moderate interference with daily activities and consulted physicians, 54.1% took prescribed drugs, and 82% used some method to avoid pollen.

Conclusions

The age-adjusted prevalence of JCP was 19.4% of the Japanese population, and estimated prevalence after correction of possible biases was 13.1%. Prescribed drugs treated approximately 60% of subjects with JCP, and 80% of subjects tried self-care by avoiding pollen.

REFERENCES (30)

  • M Okuda et al.

    Clinical aspects of Japanese cedar pollino-sis

    Allergol Int.

    (1998)
  • Y Sakurai et al.

    Prevalence and risk factors of allergic rhinitis and cedar pollinosis among Japanese men [in Japanese]

    Prev Med.

    (1998)
  • S Tanihara et al.

    Process and current status of the epidemiologic study on cedar pollinosis in Japan

    J Epidemiol.

    (1999)
  • S Nishihata et al.

    Prevalence rate of allergy to Japanese cedar pollen in Tokyo-from field investigation in 1996 by Tokyo Japanese Cedar Pollen Allergy Measurements and Review Committee

    Arerugi.

    (1999)
  • R Kishikawa

    Pollen allergy to Cryptomeria japonica and the geographical epidemiology in Japan

    Sogou Rinshou.

    (1995)
  • M Okuda et al.

    Epidemiology

  • Y Tunetoshi

    Epidemiological studies of Japanese cedar polli-nosis in Japan

    Nichi Kyou.

    (1997)
  • A Usami

    Nationwide survey of pollinosis [in Japanese]

    J Otorhinolaryngol Head Neck Surg.

    (1994)
  • K Asakura

    Geographical specificity of Japanese cedar pollino-sis in Hokkaido

    Arerugi Norinnshou.

    (1993)
  • KJ Rottnam et al.

    Measure of disease frequency

  • K Baba

    Prevalence of Japanese cedar pollinosis [in Japanese]

    Prog Med.

    (2000)
  • B Sibbald et al.

    Epidemiology of seasonal and perennial rhinitis: clinical presentation and medical history

    Thorax.

    (1991)
  • Variations in the prevalence of respiratory symptoms, self-reported asthma attacks, and use of asthma medication in the European Community Respiratory Health Survey (ECRHS)

    Eur Respir J.

    (1996)
  • I Annesi-Maesano

    Rhinitis and asthma-epidemiological evidence

    Allergy Clin Immunol Int.

    (2000)
  • Cited by (0)

    This study was partly granted by the Japanese Allergy Foundation.

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