Increased coronary heart disease and stroke hospitalisations from ambient temperatures in Ontario

Heart
Li BaiHong Chen

Abstract

To assess the associations between ambient temperatures and hospitalisations for coronary heart disease (CHD) and stroke. Our study comprised all residents living in Ontario, Canada, 1996-2013. For each of 14 health regions, we fitted a distributed lag non-linear model to estimate the cold and heat effects on hospitalisations from CHD, acute myocardial infarction (AMI), stroke and ischaemic stroke, respectively. These effects were pooled using a multivariate meta-analysis. We computed attributable hospitalisations for cold and heat, defined as temperatures above and below the optimum temperature (corresponding to the temperature of minimum morbidity) and for moderate and extreme temperatures, defined using cut-offs at the 2.5th and 97.5th temperature percentiles. Between 1996 and 2013, we identified 1.4 million hospitalisations from CHD and 355 837 from stroke across Ontario. On cold days with temperature corresponding to the 1st percentile of temperature distribution, we found a 9% increase in daily hospitalisations for CHD (95% CI 1% to 16%), 29% increase for AMI (95% CI 15% to 45%) and 11% increase for stroke (95% CI 1% to 22%) relative to days with an optimal temperature. High temperatures (the 99th percentile) also increas...Continue Reading

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Citations

Mar 11, 2019·International Journal of Biometeorology·Longjiang CuiJinxia Zhai
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Sep 26, 2021·Environmental Science and Pollution Research International·Mohammad Radwanur TalukderDung Phung

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