eCite Digital Repository

Ambulance dispatches and heatwaves in Tasmania, Australia: A case-crossover analysis


Campbell, SL and Remenyi, T and Williamson, GJ and Rollins, D and White, CJ and Johnston, F, Ambulance dispatches and heatwaves in Tasmania, Australia: A case-crossover analysis, Environmental Research, 202 Article 111655. ISSN 0013-9351 (2021) [Refereed Article]

Copyright Statement

2021 Elsevier Inc. All rights reserved.

DOI: doi:10.1016/j.envres.2021.111655


Background: Climate change is causing an increase in the frequency and severity of heatwave events, with a corresponding negative impact on human health. Health service utilisation during a heatwave is increased, with a greater risk of poor health outcomes identified for specific population groups. In this study, we examined the impact of heatwave events on ambulance dispatches in Tasmania, Australia from 2008 to 2019 to explore health service utilisation and identify the most vulnerable populations at a local level.

Methods: We used a time-stratified case-crossover analysis with conditional logistic regression to examine the association between ambulance dispatches and three levels of heatwave events (extreme, severe, and low-intensity). We examined the relationship for the whole study population, and by age, gender, socio-economic advantage and clinical diagnostic group.

Results: We found that ambulance dispatches increase by 34% (OR 1.34, 95% CI 1.18-1.52) during extreme heatwaves, by 10% (OR 1.10, 95% CI 1.05-1.15) during severe heatwaves and by 4% (OR 1.04, 95% CI 1.02-1.06) during low-intensity heatwaves. We found significant associations for the elderly (over 65), the young (5 and under) and for regions with the greatest socio-economic disadvantage.

Conclusion: Heatwaves were associated with increased demands on ambulance services in Tasmania. In subgroups of people aged over 65 or under 5 years of age, and those from areas of higher disadvantage, we generally observed greater effect sizes than for the population as a whole.

Item Details

Item Type:Refereed Article
Keywords:extreme heat, heatwave, ambulance, emergency management, case-crossover
Research Division:Earth Sciences
Research Group:Atmospheric sciences
Research Field:Adverse weather events
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Natural hazards
Objective Field:Climatological hazards (e.g. extreme temperatures, drought and wildfires)
UTAS Author:Campbell, SL (Dr Sharon Campbell)
UTAS Author:Remenyi, T (Dr Tom Remenyi)
UTAS Author:Williamson, GJ (Dr Grant Williamson)
UTAS Author:Rollins, D (Mr Dean Rollins)
UTAS Author:White, CJ (Dr Chris White)
UTAS Author:Johnston, F (Professor Fay Johnston)
ID Code:145313
Year Published:2021
Web of Science® Times Cited:4
Deposited By:Plant Science
Deposited On:2021-07-15
Last Modified:2021-09-30

Repository Staff Only: item control page