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Association of seasonal climate variability and age-specific mortality in northern Sweden before the onset of industrialization
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Epidemiologi och global hälsa. (Centre for Global Health Research ; Arcum)ORCID-id: 0000-0003-4030-0449
Umeå universitet, Samhällsvetenskapliga fakulteten, Centrum för befolkningsstudier (CBS). Umeå universitet, Samhällsvetenskapliga fakulteten, Demografiska databasen. (ALC ; Arcum)ORCID-id: 0000-0001-7439-002X
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för matematik och matematisk statistik.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för matematik och matematisk statistik. (Arcum)
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2014 (Engelska)Ingår i: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 11, nr 7, s. 6940-6954Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND AND AIMS: Little is known about health impacts of climate in pre-industrial societies. We used historical data to investigate the association of temperature and precipitation with total and age-specific mortality in Skellefteå, northern Sweden, between 1749 and 1859.

METHODS: We retrieved digitized aggregated population data of the Skellefteå parish, and monthly temperature and precipitation measures. A generalized linear model was established for year to year variability in deaths by annual and seasonal average temperature and cumulative precipitation using a negative binomial function, accounting for long-term trends in population size. The final full model included temperature and precipitation of all four seasons simultaneously. Relative risks (RR) with 95% confidence intervals (CI) were calculated for total, sex- and age-specific mortality.

RESULTS: In the full model, only autumn precipitation proved statistically significant (RR 1.02; CI 1.00-1.03, per 1cm increase of autumn precipitation), while winter temperature (RR 0.98; CI 0.95-1.00, per 1 °C increase in temperature) and spring precipitation (RR 0.98; CI 0.97-1.00 per 1 cm increase in precipitation) approached significance. Similar effects were observed for men and women. The impact of climate variability on mortality was strongest in children aged 3-9, and partly also in older children. Infants, on the other hand, appeared to be less affected by unfavourable climate conditions.

CONCLUSIONS: In this pre-industrial rural region in northern Sweden, higher levels of rain during the autumn increased the annual number of deaths. Harvest quality might be one critical factor in the causal pathway, affecting nutritional status and susceptibility to infectious diseases. Autumn rain probably also contributed to the spread of air-borne diseases in crowded living conditions. Children beyond infancy appeared most vulnerable to climate impacts.

Ort, förlag, år, upplaga, sidor
Basel, Switzerland: MDPI AG , 2014. Vol. 11, nr 7, s. 6940-6954
Nyckelord [en]
climate variability, seasonal climate variability, mortality, age-specific mortality, pre-industrial societies, Sweden
Nationell ämneskategori
Matematik
Identifikatorer
URN: urn:nbn:se:umu:diva-91936DOI: 10.3390/ijerph110706940ISI: 000339989500022PubMedID: 25003551OAI: oai:DiVA.org:umu-91936DiVA, id: diva2:738570
Konferens
ISEE, ISES and ISIAQ Conference 2013
Anmärkning

This article belongs to the Special Issue Environment and Health - Bridging South, North, East and West: Proceedings from the ISEE, ISES and ISIAQ Conference 2013

Tillgänglig från: 2014-08-18 Skapad: 2014-08-18 Senast uppdaterad: 2018-06-07Bibliografiskt granskad

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Rocklöv, JoacimEdvinsson, SörenArnqvist, PerSjöstedt de Luna, SaraSchumann, Barbara

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Rocklöv, JoacimEdvinsson, SörenArnqvist, PerSjöstedt de Luna, SaraSchumann, Barbara
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Epidemiologi och global hälsaCentrum för befolkningsstudier (CBS)Demografiska databasenInstitutionen för matematik och matematisk statistik
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