Effects of diurnal temperature range on cardiovascular and respiratory hospital admissions in Korea

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The effects of heat and cold waves have been studied as risk factors for cardiovascular and respiratory diseases. However, few studies have examined the effect of diurnal temperature changes on health. We hypothesized that the diurnal temperature range (DTR) may affect the rate of hospital admissions for cardiovascular- and respiratory-related diseases, and therefore investigated the risk of hospital admissions of cardiovascular (stroke, myocardial infarction, ischemic heart disease, cardiac failure, cardiac disease, and arrhythmia) and respiratory (asthma, chronic obstructive pulmonary disease, and pneumonia) diseases attributable to DTR in four metropolitan areas in Korea during 2003-2006. The area-combined effects of DTR on some cardiovascular and respiratory diseases were significantly increased by an increment of DTR. In particular, the effects on cardiac failure and asthma were significant with the percentage change of hospital admissions per 1 °C increment of DTR at 3.0% (95% CI, 1.4-4.6) and 1.1% (95% CI, 0.1-2.0), respectively, among 9 diseases. For those 75 years and older, the DTR effect on asthma admissions was greater than in those aged under 75 years. These results support the hypothesis of a positive association between DTR and cardiovascular and respiratory hospital admission.

Original languageEnglish
JournalThe Science of the Total Environment
Volume417-418
Pages (from-to)55-60
Number of pages6
ISSN0048-9697
DOIs
Publication statusPublished - 15 Feb 2012

Bibliographical note

Copyright © 2012 Elsevier B.V. All rights reserved.

    Research areas

  • Aged, Cardiovascular Diseases/epidemiology, Case-Control Studies, Cross-Over Studies, Female, Hospitalization/statistics & numerical data, Humans, Linear Models, Male, Poisson Distribution, Republic of Korea/epidemiology, Respiration Disorders/epidemiology, Temperature

ID: 230072308