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Int. J. Environ. Res. Public Health 2017, 14(4), 449; doi:10.3390/ijerph14040449

Associations between Temperature and Hospital Admissions for Subarachnoid Hemorrhage in Korea

1
Institute of Health and Environment, Seoul National University, Gwanak-gu, Seoul 151-742, Korea
2
School of Medicine, Technische Universität München, Arcisstraße 21, 80333 Munich, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Jan C. Semenza
Received: 10 March 2017 / Revised: 17 April 2017 / Accepted: 19 April 2017 / Published: 21 April 2017
(This article belongs to the Collection Climate Change and Human Health)
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Abstract

The relationship between temperature and subarachnoid hemorrhage (SAH) is less studied than that between temperature and myocardial infarction or other cardiovascular diseases. This study investigated the association between daily temperature and risk of SAH by analyzing the hospital admission records of 111,316 SAH patients from 2004 to 2012 in Korea. A Poisson regression model was used to examine the association between temperature and daily SAH hospital admissions. To analyze data and identify vulnerable groups, we used the following subgroups: sex, age, insurance type, area (rural or urban), and different climate zones. We confirmed a markedly higher SAH risk only for people of low socioeconomic status in both hot and cold temperatures; the relative risk (RR) in the Medicaid group was significantly increased and ranged from 1.04 to 1.11 for cold temperatures and 1.10 to 1.11 for hot temperatures. For the National Health Insurance group, the RR was increased to 1.02 for the maximum temperature only. The increased risk for SAH was highest in the temperate zone. An increase above the heat threshold temperature and a decrease below the cold threshold temperature were correlated with an increased risk of SAH in susceptible populations and were associated with different lag effects and RRs. View Full-Text
Keywords: subarachnoid hemorrhage; temperature; climate zones; hospital admission; epidemiology; weather subarachnoid hemorrhage; temperature; climate zones; hospital admission; epidemiology; weather
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Lee, S.; Guth, M. Associations between Temperature and Hospital Admissions for Subarachnoid Hemorrhage in Korea. Int. J. Environ. Res. Public Health 2017, 14, 449.

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