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Heat wave–related mortality in Sweden : A case-crossover study investigating effect modification by neighbourhood deprivation

Oudin Åström, Daniel LU ; Åström, Christofer; Forsberg, Bertil; Vicedo-Cabrera, Ana M.; Gasparrini, Antonio; Oudin, Anna LU and Sundquist, Kristina LU (2018) In Scandinavian Journal of Public Health
Abstract

Aims: The present study aimed to investigate if set thresholds in the Swedish heat-wave warning system are valid for all parts of Sweden and if the heat-wave warning system captures a potential increase in all-cause mortality and coronary heart disease (CHD) mortality. An additional aim was to investigate whether neighbourhood deprivation modifies the relationship between heat waves and mortality. Methods: From 1990 until 2014, in 14 municipalities in Sweden, we collected data on daily maximum temperatures and mortality for the five warmest months. Heat waves were defined according to the categories used in the current Swedish heat-wave warning system. Using a case-crossover approach, we investigated the association between heat waves... (More)

Aims: The present study aimed to investigate if set thresholds in the Swedish heat-wave warning system are valid for all parts of Sweden and if the heat-wave warning system captures a potential increase in all-cause mortality and coronary heart disease (CHD) mortality. An additional aim was to investigate whether neighbourhood deprivation modifies the relationship between heat waves and mortality. Methods: From 1990 until 2014, in 14 municipalities in Sweden, we collected data on daily maximum temperatures and mortality for the five warmest months. Heat waves were defined according to the categories used in the current Swedish heat-wave warning system. Using a case-crossover approach, we investigated the association between heat waves and mortality in Sweden, as well as a modifying effect of neighbourhood deprivation. Results: On a national as well as a regional level, heat waves significantly increased both all-cause mortality and CHD mortality by approximately 10% and 15%, respectively. While neighbourhood deprivation did not seem to modify heat wave–related all-cause mortality, CHD mortality did seem to modify the risk. Conclusions: It may not be appropriate to assume that heat waves in Sweden will have the same impact in a northern setting as in a southern, or that the impact of heat waves will be the same in affluent and deprived neighbourhoods. When designing and implementing heat-wave warning systems, neighbourhood, regional and national information should be incorporated.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Heat wave, heat-wave warning system, mortality, neighbourhood deprivation
in
Scandinavian Journal of Public Health
publisher
Taylor & Francis
external identifiers
  • scopus:85059658931
ISSN
1403-4948
DOI
10.1177/1403494818801615
language
English
LU publication?
yes
id
2313511a-3f24-4fc4-a2e4-e39d76ee0f60
date added to LUP
2019-01-18 12:30:46
date last changed
2019-01-19 03:00:03
@article{2313511a-3f24-4fc4-a2e4-e39d76ee0f60,
  abstract     = {<p>Aims: The present study aimed to investigate if set thresholds in the Swedish heat-wave warning system are valid for all parts of Sweden and if the heat-wave warning system captures a potential increase in all-cause mortality and coronary heart disease (CHD) mortality. An additional aim was to investigate whether neighbourhood deprivation modifies the relationship between heat waves and mortality. Methods: From 1990 until 2014, in 14 municipalities in Sweden, we collected data on daily maximum temperatures and mortality for the five warmest months. Heat waves were defined according to the categories used in the current Swedish heat-wave warning system. Using a case-crossover approach, we investigated the association between heat waves and mortality in Sweden, as well as a modifying effect of neighbourhood deprivation. Results: On a national as well as a regional level, heat waves significantly increased both all-cause mortality and CHD mortality by approximately 10% and 15%, respectively. While neighbourhood deprivation did not seem to modify heat wave–related all-cause mortality, CHD mortality did seem to modify the risk. Conclusions: It may not be appropriate to assume that heat waves in Sweden will have the same impact in a northern setting as in a southern, or that the impact of heat waves will be the same in affluent and deprived neighbourhoods. When designing and implementing heat-wave warning systems, neighbourhood, regional and national information should be incorporated.</p>},
  author       = {Oudin Åström, Daniel and Åström, Christofer and Forsberg, Bertil and Vicedo-Cabrera, Ana M. and Gasparrini, Antonio and Oudin, Anna and Sundquist, Kristina},
  issn         = {1403-4948},
  keyword      = {Heat wave,heat-wave warning system,mortality,neighbourhood deprivation},
  language     = {eng},
  publisher    = {Taylor & Francis},
  series       = {Scandinavian Journal of Public Health},
  title        = {Heat wave–related mortality in Sweden : A case-crossover study investigating effect modification by neighbourhood deprivation},
  url          = {http://dx.doi.org/10.1177/1403494818801615},
  year         = {2018},
}