Lack of seasonal variation in cardiovascular mortality in a country near the equator

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State: Public
Version: After imprimatur
Serval ID
serval:BIB_AEB638414DF7
Type
A Master's thesis.
Publication sub-type
Master (thesis) (master)
Collection
Publications
Institution
Title
Lack of seasonal variation in cardiovascular mortality in a country near the equator
Author(s)
Dabetic A.
Director(s)
Bovet P.
Codirector(s)
Stringhini S.
Institution details
Université de Lausanne, Faculté de biologie et médecine
Publication state
Accepted
Issued date
2012
Language
english
Number of pages
15
Abstract
Introduction: Mortality from cardiovascular disease (CVD) varies according to seasons in countries that are located far away from the equator, likely linked to concomitant seasonal variation in underlying CVD risk factors. We assessed temporal variation in CVD mortality in the Seychelles, a small island state situated near the equator and where the climate is virtually constant throughout the year. Seychelles is one of the few countries located near the equator where all deaths are registered. Methods: We recoded all deaths along broad causes, including CVD (n=5643), stroke (2112) and myocardial infarction (MI, 804). Stroke and MI were considered as the cause of death if the diagnosis appeared in any of the four fields for underlying causes of death in the death certificates. In view of the small size of the population, we pooled all deaths (n=13'163) between 1989 and 2010. Results: Mortality for all CVD, stroke and MI did not systematically vary according to month or season (chi square >0.05). A lack of variation was also observed within sex and age categories. Conclusion: The lack of seasonal variation in CVD mortality in a country located near the equator is consistent with the hypothesis that seasonal variation in CVD decreases along decreasing a country's latitude.
Keywords
Cardiovascular disease - Africa - Trends - Mortality - Variation
Create date
12/09/2013 15:24
Last modification date
20/08/2019 16:18
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