Excess Mortality from Breast Cancer in Relation to Mammograpy Screening in Northern Sweden

doi:10.1177/096914139700400104

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Lenner, Per (författare)

Excess Mortality from Breast Cancer in Relation to Mammograpy Screening in Northern Sweden

E-artikel/E-kapitelEngelska1997

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Sage Publications1997

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LIBRIS-ID:22071475
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96256uri
urn:nbn:se:umu:diva-96256urn
10.1177/096914139700400104doi

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Språk:engelska

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deldatabas:Eplk_tEPLK

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digitalisering@umu
Published
gratis
Objectives— Previous randomised studies of mammography screening have shown a significant effect on breast cancer mortality, particularly in women aged 50–Q69 at randomisation. Breast cancer mortality has traditionally been studied by judgments on causes of death, either from cause of death registers or from medical records. In this study an alternative method was used, estimating the excess mortality associated with breast cancer. Setting— In 1990 two counties of northern Sweden started population based mammography screening of women aged 40–74. The unscreened population in the two other counties of the same region were selected as controls. Results— Excess mortality associated with breast cancer was lower in the screened population, and was discernible three to four years after the start of screening. The relative risk estimate, based on the cumulative excess number of deaths from breast cancer during 1990–95 in the screened versus the control population aged 40–74 (at diagnosis of breast cancer), was 0.72 (95% confidence interval (CI) 0.53 to 0.99). For women aged 50–69 it was 0.67 (95% CI 0.46 to 0.99). In the 50–69 age group the estimated excess number of deaths from breast cancer during 1995 was 17.0 per 100 000 women (95% CI 5.0 to 29.0) in the screened counties and 51.1 per 100 000 (95% CI 30.2 to 71.9) in the unscreened counties. Conclusions— Population based routine screening has substantial effects on breast cancer mortality in women aged 50–69. Estimation of excess mortality can be used in future studies to evaluate the effects of mammography screening on breast cancer mortality.

Ämnesord och genrebeteckningar

Medical and Health Sciences hsv
Clinical Medicine hsv
Cancer and Oncology hsv
Medicin och hälsovetenskap hsv
Klinisk medicin hsv
Cancer och onkologi hsv
breast cancer
mortality
mammography screening
geographic variation

Biuppslag (personer, institutioner, konferenser, titlar ...)

Jonsson, Håkan1956- (författare)
Umeå universitetMedicinska fakulteten268483 (utgivare)

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Ingår i:VärdpublikationJournal of Medical Screening4:1, 6-90969-1413

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Av författaren/redakt...: Lenner, Per; Jonsson, Håkan 1 ...

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