Air pollution from bushfires and their association with hospital admissions in Sydney, Newcastle and Wollongong, Australia 1994-2

Kara Martin, Ivan Hanigan, Geoffrey Morgan, Sarah Henderson, Fay Johnston

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Objective : We examined the association between validated bushfire smoke pollution events and hospital admissions in three eastern Australian cities from 1994 to 2007.

Methods : Smoke events were defined as days on which bushfire smoke caused the 24-hour citywide average concentration of airborne particles to exceed the 99th percentile of the daily distribution for the study period. We used a time-stratified case-crossover design to assess the association between smoke events and hospital admissions. Odds ratios (OR) and 95% confidence intervals (CI) were estimated for cardiovascular and respiratory conditions on event days compared with non-event days. Models were adjusted for daily meteorology, influenza epidemics and holidays.

Results : Smoke events occurred on 58 days in Sydney (population: 3,862,000), 33 days in Wollongong (population: 406,000) and 50 days in Newcastle (population: 278,000). In Sydney, events were associated with a 6% (ORequals;1.06, 95%CI=1.02–1.09) same day increase in respiratory hospital admissions. Same day chronic obstructive pulmonary disease admissions increased 13% (ORequals;1.13, 95%CI=1.05–1.22) and asthma admissions by 12% (ORequals;1.12, 95%CI=1.05–1.19). Events were also associated with increased admissions for respiratory conditions in Newcastle and Wollongong.

Conclusions : Smoke events were associated with increased hospital admissions for respiratory but not cardiovascular conditions. Large populations are needed to assess the impacts of brief exposures
Original languageEnglish
Pages (from-to)238-243
Number of pages6
JournalAustralian and New Zealand Journal of Public Health
Volume37
Issue number3
DOIs
Publication statusPublished - 2013
Externally publishedYes

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Air Pollution
Smoke
Confidence Intervals
Population
Meteorology
Holidays
Cross-Over Studies
Chronic Obstructive Pulmonary Disease
Human Influenza
Asthma
Odds Ratio

Cite this

Martin, Kara ; Hanigan, Ivan ; Morgan, Geoffrey ; Henderson, Sarah ; Johnston, Fay. / Air pollution from bushfires and their association with hospital admissions in Sydney, Newcastle and Wollongong, Australia 1994-2. In: Australian and New Zealand Journal of Public Health. 2013 ; Vol. 37, No. 3. pp. 238-243.
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abstract = "Objective : We examined the association between validated bushfire smoke pollution events and hospital admissions in three eastern Australian cities from 1994 to 2007.Methods : Smoke events were defined as days on which bushfire smoke caused the 24-hour citywide average concentration of airborne particles to exceed the 99th percentile of the daily distribution for the study period. We used a time-stratified case-crossover design to assess the association between smoke events and hospital admissions. Odds ratios (OR) and 95{\%} confidence intervals (CI) were estimated for cardiovascular and respiratory conditions on event days compared with non-event days. Models were adjusted for daily meteorology, influenza epidemics and holidays.Results : Smoke events occurred on 58 days in Sydney (population: 3,862,000), 33 days in Wollongong (population: 406,000) and 50 days in Newcastle (population: 278,000). In Sydney, events were associated with a 6{\%} (ORequals;1.06, 95{\%}CI=1.02–1.09) same day increase in respiratory hospital admissions. Same day chronic obstructive pulmonary disease admissions increased 13{\%} (ORequals;1.13, 95{\%}CI=1.05–1.22) and asthma admissions by 12{\%} (ORequals;1.12, 95{\%}CI=1.05–1.19). Events were also associated with increased admissions for respiratory conditions in Newcastle and Wollongong.Conclusions : Smoke events were associated with increased hospital admissions for respiratory but not cardiovascular conditions. Large populations are needed to assess the impacts of brief exposures",
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Air pollution from bushfires and their association with hospital admissions in Sydney, Newcastle and Wollongong, Australia 1994-2. / Martin, Kara; Hanigan, Ivan; Morgan, Geoffrey; Henderson, Sarah; Johnston, Fay.

In: Australian and New Zealand Journal of Public Health, Vol. 37, No. 3, 2013, p. 238-243.

Research output: Contribution to journalArticle

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AB - Objective : We examined the association between validated bushfire smoke pollution events and hospital admissions in three eastern Australian cities from 1994 to 2007.Methods : Smoke events were defined as days on which bushfire smoke caused the 24-hour citywide average concentration of airborne particles to exceed the 99th percentile of the daily distribution for the study period. We used a time-stratified case-crossover design to assess the association between smoke events and hospital admissions. Odds ratios (OR) and 95% confidence intervals (CI) were estimated for cardiovascular and respiratory conditions on event days compared with non-event days. Models were adjusted for daily meteorology, influenza epidemics and holidays.Results : Smoke events occurred on 58 days in Sydney (population: 3,862,000), 33 days in Wollongong (population: 406,000) and 50 days in Newcastle (population: 278,000). In Sydney, events were associated with a 6% (ORequals;1.06, 95%CI=1.02–1.09) same day increase in respiratory hospital admissions. Same day chronic obstructive pulmonary disease admissions increased 13% (ORequals;1.13, 95%CI=1.05–1.22) and asthma admissions by 12% (ORequals;1.12, 95%CI=1.05–1.19). Events were also associated with increased admissions for respiratory conditions in Newcastle and Wollongong.Conclusions : Smoke events were associated with increased hospital admissions for respiratory but not cardiovascular conditions. Large populations are needed to assess the impacts of brief exposures

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