Document Detail


Relationship between ambient sulfur dioxide levels and neonatal mortality near the Mt. Sakurajima volcano in Japan.
MedLine Citation:
PMID:  10616268     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We examined the association between neonatal mortality and ambient sulfur dioxide (SO2) levels in the neighborhood of Mt. Sakurajima, Yamashita public health district of Kagoshima City, during the period between 1978 and 1988. The analysis using Poisson regression models showed that the monthly average level of SO2 was positively associated with the neonatal mortality (P = 0.002). When the SO2 levels were categorized into four groups to estimate the relative risk (RR) of neonatal mortality using the lowest exposure category as a reference, the RR increased with elevated exposure levels (P for trend < 0.001) and was the highest in the group with the highest level of exposure (RR = 2.2, 95% confidence interval; 1.2-4.1). Other than SO2, we also examined the number of eruptions, the amount of ashfall, and the average level of suspended particulate matter. None of these factors was associated with neonatal mortality. Although the present study suggests that increase in SO2 levels has had an adverse effect on neonatal mortality in the neighborhood of Mt. Sakurajima, it is difficult to determine the source of the SO2. Further studies are necessary to elucidate the mechanisms of the excess neonatal mortality probably associated with the volcanic SO2 levels.
Authors:
R Shinkura; C Fujiyama; S Akiba
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of epidemiology / Japan Epidemiological Association     Volume:  9     ISSN:  0917-5040     ISO Abbreviation:  J Epidemiol     Publication Date:  1999 Nov 
Date Detail:
Created Date:  2000-01-18     Completed Date:  2000-01-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9607688     Medline TA:  J Epidemiol     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  344-9     Citation Subset:  IM    
Affiliation:
Department of Public Health, Faculty of Medicine, Kagoshima University, Japan.
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / analysis*
Confidence Intervals
Environmental Exposure
Humans
Infant Mortality*
Infant, Newborn
Japan / epidemiology
Likelihood Functions
Poisson Distribution
Regression Analysis
Risk Factors
Seasons
Sulfur Dioxide / analysis*
Volcanic Eruptions / analysis*,  statistics & numerical data
Chemical
Reg. No./Substance:
0/Air Pollutants; 7446-09-5/Sulfur Dioxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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