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Comparative Study
. 2000 Sep 16;321(7262):670-3.
doi: 10.1136/bmj.321.7262.670.

Heat related mortality in warm and cold regions of Europe: observational study

Affiliations
Comparative Study

Heat related mortality in warm and cold regions of Europe: observational study

W R Keatinge et al. BMJ. .

Abstract

Objectives: To assess heat related mortalities in relation to climate within Europe.

Design: Observational population study.

Setting: North Finland, south Finland, Baden-Württemberg, Netherlands, London, north Italy, and Athens.

Subjects: People aged 65-74.

Main outcome measures: Mortalities at temperatures above, below, and within each region's temperature band of minimum mortality.

Results: Mortality was lowest at 14.3-17.3 degrees C in north Finland but at 22.7-25.7 degrees C in Athens. Overall the 3 degrees C minimum mortality temperature bands were significantly higher in regions with higher than lower mean summer temperatures (P=0.027). This was not due to regional differences in wind speeds, humidity, or rain. As a result, regions with hot summers did not have significantly higher annual heat related mortality per million population than cold regions at temperatures above these bands. Mean annual heat related mortalities were 304 (95% confidence interval 126 to 482) in North Finland, 445 (59 to 831) in Athens, and 40 (13 to 68) in London. Cold related mortalities were 2457 (1130 to 3786), 2533 (965 to 4101), and 3129 (2319 to 3939) respectively.

Conclusions: Populations in Europe have adjusted successfully to mean summer temperatures ranging from 13.5 degrees C to 24.1 degrees C, and can be expected to adjust to global warming predicted for the next half century with little sustained increase in heat related mortality. Active measures to accelerate adjustment to hot weather could minimise temporary rises in heat related mortality, and measures to maintain protection against cold in winter could permit substantial reductions in overall mortality as temperatures rise.

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Figures

Figure
Figure
Daily mortality of people aged 65-74 in relation to mean daily temperatures in regions with the coldest, median, and warmest summer temperatures (May to August). The black squares indicate the 3°C band of minimum mortality for the region (calculated at 0.1°C intervals) and the horizontal lines show mortality in this band

Comment in

References

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