@article{ref1,
title="Temperature and Cardiovascular Deaths in the US Elderly: Changes Over Time",
journal="Epidemiology",
year="2007",
author="Barnett, Adrian G.",
volume="18",
number="3",
pages="369-372",
abstract="BACKGROUND:: Short-term changes in temperature have been associated with cardiovascular deaths. This study examines changes in this association over time among the US elderly. METHODS:: Daily cardiovascular mortality counts from 107 cities in the US National Morbidity and Mortality Air Pollution Study were regressed against daily temperature using the case-crossover method. Estimates were averaged by time and season using a meta-analysis. RESULTS:: In summer 1987 the average increase in cardiovascular deaths due to a 10 degrees F increase in temperature was 4.7%. By summer 2000, the risk with higher temperature had disappeared (-0.4%). In contrast, an increase in temperature in fall, winter and spring was associated with a decrease in deaths, and this decrease remained constant over time. CONCLUSIONS:: Heat-related cardiovascular deaths in the elderly have declined over time, probably due to increased use of air conditioning, while increased risks with cold-related temperature persist.<p /> <p>Language: en</p>",
language="en",
issn="1044-3983",
doi="10.1097/01.ede.0000257515.34445.a0",
url="http://dx.doi.org/10.1097/01.ede.0000257515.34445.a0"
}