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Original Article

Validity of Breast Cancer Registration from One Hospital into the Swedish National Cancer Registry 1961-1970

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Pages 125-128 | Accepted 15 May 1989, Published online: 08 Jul 2009
 

Abstract

The validity of the Swedish Cancer Registry data on invasive female breast cancer in Malmö 1961-1970 was investigated. A total of 1311 entries in the register were examined, each entry representing an individual tumour, and compared to data from medical records and local registries. In 137 cases (10.5%) registered in the Swedish Cancer Registry, divergencies were found, of which at least 121 were overregistrations (9.2%). Forty-three tumours were identified meriting inclusion but not registered, giving an underregistration of 3.5%. The age distribution among the excluded cases differed somewhat from that of the verified cases.

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