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Region Hovedstaden - en del af Københavns Universitetshospital
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Overdiagnosis in breast cancer screening: The impact of study design and calculations

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DOI

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Vis graf over relationer

Overdiagnosis in breast cancer screening is an important issue. A recent study from Denmark concluded that one in three breast cancers diagnosed in screening areas in women aged 50-69 years were overdiagnosed. The purpose of this short communication was to disentangle the study's methodology in order to evaluate the soundness of this conclusion. We found that both the use of absolute differences as opposed to ratios; the sole focus on non-advanced tumours and the crude allocation of tumours and person-years by screening history for women aged 70-84 years, all contributed to the very high estimate of overdiagnosis. Screening affects cohorts of screened women. Danish registers allow very accurate mapping of the fate of every woman. We should be past the phase where studies of overdiagnosis are based on the fixed age groups from routine statistics.

OriginalsprogEngelsk
TidsskriftEuropean journal of cancer (Oxford, England : 1990)
Vol/bind80
Sider (fra-til)26-29
Antal sider4
ISSN0959-8049
DOI
StatusUdgivet - jul. 2017

ID: 51903799