Asian dust and daily emergency ambulance calls among elderly people in Japan

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Abstract

Objective: To evaluate the direct health effects of Asian dust on ambulance calls and its role as an effect modifier on the effects of anthropogenic air pollution in Japan.

Methods: The subjects were 51,945 elderly residents who visited hospital emergency departments from 2006 to 2010. We evaluated the impact of Asian dust by time-series analyses and the excess risk from suspended particulate matter (SPM) stratified by Asian-dust exposure.

Results: Asian dust was associated with daily ambulance calls due to allcause, cardiovascular, and respiratory disease independently of SPM, for example, the relative risk per interquartile increase in Asian dust (3-day lag) was 1.021 (1.002 to 1.039) for cardiovascular disease. Furthermore, Asian dust modified the effects of SPM on cardiovascular and respiratory diseases.

Conclusions: Asian dust had adverse effects and modified the effect of SPM.

Original languageEnglish
Pages (from-to)1277-1283
Number of pages7
JournalJournal of Occupational and Environmental Medicine
Volume56
Issue number12
DOIs
Publication statusPublished - Dec 14 2014

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ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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