Monthly Variation in Finnish Total Mortality During 1891-2017, Temperature and Discussions
Journal Title: Biomedical Journal of Scientific & Technical Research (BJSTR) - Year 2019, Vol 14, Issue 4
Abstract
Seasonal variation in mortality resulting from cardiovascular diseases (CVD) have been demonstrated e.g. in Norway and Ireland, with the highest levels observed during the coldest months of the year, with Jan/Aug CVD mortality ratios 1.22 and 1.35, respec-tively. In Finland regional mortality from coronary heart disease (CHD) has been associ-ated significantly inversely with local average annual temperature (Temp)-approximately as with latitude, although association was higher with longitude. This study is assessing Finnish monthly variation in total mortality (TOT) during 1881-2017 and its association with temperature in 1981-2010.Results: Jan/Aug Tot ratio was 1.40 in 1891-30, 1.24 in 1945-64, 1.17 in 1965-2017 and 1.19 in 1985-95. Periodical mean of annual TOT. (Max/Min) ratio was 1.45 in 1891-1930, 1.30 in 1945-64, 1.17 in 1965-84, 1.19 in 1985-2004 and 1.16 in 2005-2017. In 1891-1984 the mortality maximum (Max) was in February or March, later in January. In 1891-1930 mortality minimum (Min) was in September, later in August. TOT associated best with Temp of the preceding month. Before 1965 TOT association with Temp of the re-spective month was weaker than with Temp two months earlier, since 1965 the opposite. Conclusion: The seasonal TOT variation was highest in 1891-30, next highest in 1945-65 and stabilized after that. Amplitudes of seasonal Finnish TOT variation in 1985-95 were slightly lower than those of CVD variation in Norway and Ireland. Causality of TOT variation and its changes are discussed.
Authors and Affiliations
Töysä T
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- EP ID EP589413
- DOI 10.26717/BJSTR.2019.14.002591
- Views 136
- Downloads 0
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