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Trends in breast cancer incidence and mortality in Denmark, 1943–1982
Author(s) -
Ewertz Marianne,
Carstensen Bendix
Publication year - 1988
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.2910410110
Subject(s) - incidence (geometry) , demography , breast cancer , medicine , danish , cancer registry , mortality rate , cancer , cohort , population , cohort study , multivariate analysis , environmental health , sociology , optics , linguistics , philosophy , physics
Abstract The trend in breast cancer incidence and mortality was examined using data from the Danish Cancer Registry and the national mortality statistics respectively. The study population comprised £5,870 incident cases and 31,817 deaths from breast cancer in Denmark between 1943 and 1982. The incidence rate remained almost constant up to around 1960, whereafter it rose steadily. Comparatively little change was observed in mortality. Possible explanations for the differing trends in incidence and mortality include under‐reporting of breast cancer from death certificates and improvement in survival. A multivariate statistical analysis showed that the increase in incidence was due mostly to a cohort effect, though calendar time may have had a slight effect as well.