Effects of Heatwaves on Hospital Admissions for Cardiovascular and Respiratory Diseases, in Southern Vietnam, 2010-2018: Time Series Analysis

This study investigated the associations between heatwaves and daily hospital admissions for cardiovascular and respiratory diseases in two provinces in Viet Nam known to be vulnerable to droughts during 2010-2018. This study applied a time series analysis with data extracted from the electronic dat...

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Bibliographic Details
Published in:	International journal of environmental research and public health Vol. 20; no. 5; p. 3908
Main Authors:	Nhung, Nguyen Thi Trang, Hoang, Le Tu, Tuyet Hanh, Tran Thi, Toan, Luu Quoc, Thanh, Nguyen Duc, Truong, Nguyen Xuan, Son, Nguyen Anh, Nhat, Hoong Van, Quyen, Nguyen Huu, Nhu, Ha Van
Format:	Journal Article
Language:	English
Published:	Switzerland MDPI AG 22-02-2023 MDPI
Subjects:	Admission and discharge Aged Analysis Cardiovascular Diseases Chronology Climate Codes Drought Heat waves Holidays & special occasions Hospitalization Hospitals Hot Temperature Humans Humidity Lung diseases Medical research Medicine, Experimental Mortality Patient admissions Provinces Public health Rain Regression analysis Relative humidity Respiration Disorders Respiratory diseases Respiratory distress syndrome Respiratory Tract Diseases Risk factors Statistical analysis Temperature Time Factors Time series Trends Vietnam Weather Vietnam Australia China hospital admissions cardiovascular respiratory heatwaves time-series analysis
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Summary:	This study investigated the associations between heatwaves and daily hospital admissions for cardiovascular and respiratory diseases in two provinces in Viet Nam known to be vulnerable to droughts during 2010-2018. This study applied a time series analysis with data extracted from the electronic database of provincial hospitals and meteorological stations from the corresponding province. To eliminate over-dispersion, this time series analysis used Quasi-Poisson regression. The models were controlled for the day of the week, holiday, time trend, and relative humidity. Heatwaves were defined as the maximum temperature exceeding P90th over the period from 2010 to 2018 during at least three consecutive days. Data from 31,191 hospital admissions for respiratory diseases and 29,056 hospitalizations for cardiovascular diseases were investigated in the two provinces. Associations between hospital admissions for respiratory diseases and heatwaves in Ninh Thuan were observed at lag 2, with excess risk (ER = 8.31%, 95% confidence interval: 0.64-16.55%). However, heatwaves were negatively associated with cardiovascular diseases in Ca Mau, which was determined amongst the elderly (age above 60), ER = -7.28%, 95%CI: -13.97--0.08%. Heatwaves can be a risk factor for hospital admission due to respiratory diseases in Vietnam. Further studies need to be conducted to assert the link between heat waves and cardiovascular diseases.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1660-4601 1661-7827 1660-4601
DOI:	10.3390/ijerph20053908