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Increase of regional total cancer incidence in north Sweden due to the Chernobyl accident?
Linköping University, Department of Molecular and Clinical Medicine, Occupational and Environmental Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Pain and Occupational Centre, Occupational and Environmental Medicine Centre.
Linköping University, Department of Molecular and Clinical Medicine, Occupational and Environmental Medicine. Linköping University, Faculty of Health Sciences.
Department of Oncology, Örebro University Hospital, Örebro, Sweden.
Department of Health Policy, Västernorrland County Council, Härnösand, Sweden.
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2004 (English)In: Journal of Epidemiology and Community Health, ISSN 0143-005X, E-ISSN 1470-2738, Vol. 58, no 12, 1011-1016 p.Article in journal (Refereed) Published
Abstract [en]

Study objective: Is there any epidemiologically visible influence on the cancer incidence after the Chernobyl fallout in Sweden?

Design: A cohort study was focused on the fallout of caesium-137 in relation to cancer incidence 1988–1996.

Setting: In northern Sweden, affected by the Chernobyl accident in 1986, 450 parishes were categorised by caesium-137 deposition: <3 (reference), 3–29, 30–39, 40–59, 60–79, and 80–120 kiloBecquerel/m2.

Participants: All people 0–60 years living in these parishes in 1986 to 1987 were identified and enrolled in a cohort of 1 143 182 persons. In the follow up 22 409 incident cancer cases were retrieved in 1988–1996. A further analysis focused on the secular trend.

Main results: Taking age and population density as confounding factors, and lung cancer incidence in 1988–1996 and total cancer incidence in 1986–1987 by municipality as proxy confounders for smoking and time trends, respectively, the adjusted relative risks for the deposition categories were 1.00 (reference <3 kiloBecquerel/m2), 1.05, 1.03, 1.08, 1.10, and 1.21. The excess relative risk was 0.11 per 100 kiloBecquerel/m2 (95% CI 0.03 to 0.20). Considering the secular trend, directly age standardised cancer incidence rate differences per 100 000 person years between 1988 to 1996 and the reference period 1986–1987, were 30.3 (indicating a time trend in the reference category), 36.8, 42.0, 45.8, 50.1, and 56.4. No clear excess occurred for leukaemia or thyroid cancer.

Conclusions: Unless attributable to chance or remaining uncontrolled confounding, a slight exposure related increase in total cancer incidence has occurred in northern Sweden after the Chernobyl accident.

Place, publisher, year, edition, pages
London, UK: BMJ Publishing Group , 2004. Vol. 58, no 12, 1011-1016 p.
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Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-31070DOI: 10.1136/jech.2003.017988ISI: 000226898000010Local ID: 16792OAI: oai:DiVA.org:liu-31070DiVA: diva2:251893
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2014-06-18Bibliographically approved

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Tondel, MartinHjalmarsson, PeterAxelson, Olav

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