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- Title
Does Abortion Increase the Risk of Breast Cancer? Results of a Meta-Analysis and a Cohort Study Differ.
- Authors
Althaus, F.
- Abstract
This article presents information on two recent studies which have come to opposite conclusions regarding a possible link between induced abortion and breast cancer. The first, a meta-analysis based on data from 23 studies conducted in 11 countries, found that induced abortion significantly increases the risk of breast cancer among parous women, by 50 percent if the abortion was performed before their first full-term pregnancy and by 30 percent if it occurred after their first full-term pregnancy. The second analysis, a Danish cohort study using linked information from three national databases and thereby avoiding possible biases arising from misreporting of abortion, found no increased risk of breast cancer among women who have had an abortion, regardless of parity, age at abortion, time since abortion or age at diagnosis of breast cancer. The data used in the meta-analysis were drawn from 28 published reports of 22 case-control studies and one cohort study conducted between 1957 and 1996.
- Subjects
ABORTION; BREAST cancer; META-analysis; PREGNANCY; BIRTH control; CANCER in women
- Publication
Family Planning Perspectives, 1997, Vol 29, Issue 2, p90
- ISSN
0014-7354
- Publication type
Article
- DOI
10.2307/2953369