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Seasonality in mortality and its relationship to temperature among the older population in Hanoi, Vietnam
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Epidemiology and Global Health. African Population and Health Research Center, Nairobi, Kenya.
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2014 (English)In: Global Health Action, ISSN 1654-9716, E-ISSN 1654-9880, Vol. 7, 23115Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Several studies have established a relationship between temperature and mortality. In particular, older populations have been shown to be vulnerable to temperature effects. However, little information exists on the temperature-mortality relationship in Vietnam. OBJECTIVES: This article aims to examine the monthly temperature-mortality relationship among older people in Hanoi, Vietnam, over the period between 2005 and 2010, and estimate seasonal patterns in mortality. METHODS: We employed Generalized Additive Models, including smooth functions, to model the temperature-mortality relationships. A quasi-Poisson distribution was used to model overdispersion of death counts. Temporal trends, seasonality, and population size were adjusted for while estimating changes in monthly mortality over the study period. A cold month was defined as a month with a mean temperature below 19 degrees C. RESULTS: This study found that the high peak of mortality coincided with low temperatures in the month of February 2008, during which the mean temperature was the lowest in the whole study period. There was a significant relationship between mean monthly temperature and mortality among the older people (pB0.01). Overall, there was a significant decrease in the number of deaths in the year 2009 during the study period. There was a 21% increase in the number of deaths during the cold season compared to the warm season. The increase in mortality during the cold period was higher among females compared to males (female: IRR [incidence relative risk] = 1.23; male: IRR = 1.18). CONCLUSIONS: Cold temperatures substantially increased mortality among the older population in Hanoi, Vietnam, and there were gender differences. Necessary preventive measures are required to mitigate temperature effects with greater attention to vulnerable groups.

Place, publisher, year, edition, pages
Co-Action publishing , 2014. Vol. 7, 23115
Keyword [en]
temperature, mortality, older, Vietnam
National Category
Public Health, Global Health, Social Medicine and Epidemiology
URN: urn:nbn:se:umu:diva-97905DOI: 10.3402/gha.v7.23115ISI: 000346188600009PubMedID: 25511883OAI: diva2:778834

Special Issue: Climate Change and Health in Vietnam

Available from: 2015-01-12 Created: 2015-01-08 Last updated: 2016-06-28Bibliographically approved

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