The association between cold extremes and neonatal mortality in Swedish Sápmi from 1800 to 1895

Background: Studies in which the association between temperature and neonatal mortality (deaths during the first 28 days of life) is tracked over extended periods that cover demographic, economic and epidemiological transitions are quite limited. From previous research about the demographic transiti...

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Vydané v:Global health action Ročník 12; číslo 1; s. 1623609
Hlavní autori: Karlsson, Lena, Lundevaller, Erling, Schumann, Barbara
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States Taylor & Francis 01.01.2019
Taylor & Francis Ltd
Taylor & Francis Group
Predmet:
19th century
Adolescent
Births
Child
Child mortality
Child Mortality - history
Child Mortality - trends
Child, Preschool
Cold
Deaths
Demographic transition
Demographic transition theory
Environmental aspects
Environmental factors
epidemiologi
Epidemiology
Ethnicity
Extreme cold
Extreme Cold - adverse effects
Extremes
Female
Forecasting
Historical Demography
historisk demografi
History, 19th Century
Humans
Indigenous peoples
indigenous population
indigenous populations
Infant
Infant mortality
Infant Mortality - history
Infant Mortality - trends
Infant, Newborn
Infants
Living conditions
Male
Mortality
Mortality rates
Neonatal mortality
Neonates
Original
Population
Population Groups - history
Population Groups - statistics & numerical data
Pregnancy
preindustrial societies
Risk factors
Sami people
Seasonal variations
seasonality
Sweden
Sweden - epidemiology
temperature
Vulnerability
Weather
Winter
Sweden
temperature
Sweden
Neonatal mortality
indigenous population
preindustrial societies
seasonality
ISSN:1654-9716, 1654-9880, 1654-9880
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Shrnutí:Background: Studies in which the association between temperature and neonatal mortality (deaths during the first 28 days of life) is tracked over extended periods that cover demographic, economic and epidemiological transitions are quite limited. From previous research about the demographic transition in Swedish Sápmi, we know that infant and child mortality was generally higher among the indigenous (Sami) population compared to non-indigenous populations. Objective: The aim of this study was to analyse the association between extreme temperatures and neonatal mortality among the Sami and non-Sami population in Swedish Sápmi (Lapland) during the nineteenth century. Methods: Data from the Demographic Data Base, Umeå University, were used to identify neonatal deaths. We used monthly mean temperature in Tornedalen and identified cold and warm month (5th and 95th) percentiles. Monthly death counts from extreme temperatures were modelled using negative binomial regression. We computed relative risks (RR) with 95% confidence intervals (CI), adjusting for time trends and seasonality. Results: Overall, the neonatal mortality rate was higher among Sami compared to non-Sami infants (62/1,000 vs 35/1,000 live births), although the differences between the two populations decreased after 1860. For the Sami population prior 1860, the results revealed a higher neonatal incidence rate during cold winter months (<−15.4°C, RR = 1.60, CI 1.14-2.23) compared to infants born during months of medium temperature. No association was found between extreme cold months and neonatal mortality for non-Sami populations. Warm months (+15.1°C) had no impact on Sami or non-Sami populations. Conclusions: This study revealed the role of environmental factors (temperature extremes) on infant health during the demographic transition where cold extremes mainly affected the Sami population. Ethnicity and living conditions contributed to differential weather vulnerability.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1654-9716
1654-9880
1654-9880
DOI:10.1080/16549716.2019.1623609