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The Effects of Volcanic Disaster on the Prevalence and Severity of Bronchial Asthma

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Title: The Effects of Volcanic Disaster on the Prevalence and Severity of Bronchial Asthma
Authors: Sasayama, Hatsuyo / Aoyagi, Kiyoshi / Tagawa, Yoshimasa / Tagawa, Masako / Mori, Kazuhiko / Honda, Sumihisa / Takemoto, Tai-Ichiro
Issue Date: 18-Jun-2002
Citation: Acta medica Nagasakiensia. 2002, 47(1-2), p.31-36
Abstract: Objectives: To evaluate the impact of volcanic disaster on bronchial asthma, the prevalence and the extent of deterioration of asthma were studied among primary school children aged 6 to 11 years who experienced the volcanic eruption of Mt. Unzen Fugen, Nagasaki, Japan. Methods: Questionnaire data were collected from the parents or guardians of primary school children. Asthma was classified into four categories: diagnosed asthma, current asthma, remitted asthma, and deteriorated asthma, and the prevalence of each category was compared according to sex and grade. We also analyzed the relation between asthma and past illness and family history including experience of volcanic disaster. Results: Multiple logistic regression analysis showed that past illnesses of allergic diseases, such as allergic rhinitis, dermatitis and conjunctivitis were associated with either current asthma or deteriorated asthma. On the effects of volcanic disaster, a change of family member after volcanic disaster was significantly associated with deteriorated asthma (odds ratio=3.20, 95% confidence interval=1.79-5.70). Location of school seemed to somewhat influence the prevalence of deteriorated asthma, which might relate to the distance from the volcanic crater. Conclusion: Our findings suggest that not only gases and ash but also changes in psychosocial conditions by refuge or related anxiety may influence the prevalence of asthma among primary school children.
Keywords: Mt. Unzen-Fugen / volcanic eruption / primary school-children / bronchial asthma / refugee / logistic analysis
URI: http://hdl.handle.net/10069/16205
ISSN: 00016055
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 47, No. 1-2

Citable URI : http://hdl.handle.net/10069/16205

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