Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by LUND, E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by LUND, E.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© 1990 Oxford University Press

research-article

Childbearing in Marriage and Mortality from Breast Cancer in Norway

EILIV LUND

Institutt for samfunnsmedisin, Postuttak, Universitetet i Tromsų 9000 Tromsų, Norway

Lund E (Institute of Community Medicine, University of Tromsų, Norway). Childbearing in marriage and mortality from breast cancer in Norway. International Journal of Epidemiology 1990, 19: 527–531.

The relationship between childbearing and mortality from breast cancer has been studied in a cohort of 822 593 currently married Norwegian women with information on parity from the Census in 1970 and follow-up till 1985. All age groups of parous women showed significant trends of decreasing mortality rates with increasing parity. Nulliparous women had the same mortality rates as uniparous women in all age groups. In a stratified analysis, for age group 45–74 years, the relative risk for uniparous women was between 3.8 and 4.5 dependent on age at first birth compared to women with 8–9 children, age at first birth before the age of 25 and last birth after the age of 30 years. In a multivariate analysis age and parity were stronger risk factors than age at first birth, while age at last birth was nonsignificant. Among women 45–74 years the population attributable risk of breast cancer mortality due to childbearing was 72%, using women with 8–9 children as the reference group. The use of different definitions of reference group for parity is discussed.

Revised 1 February 1990


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.