NDLI: Life course breast cancer risk factors and adult breast density (United Kingdom)

Content Provider	Springer Nature Link
Author	Jeffreys, Mona Warren, Ruth Gunnell, David McCarron, Peter Smith, George Davey
Copyright Year	2004
Abstract	Objective To determine whether risk factors in childhood and early adulthood affect later mammographic breast density. Methods: Subjects were 628 women who attended a medical examination at the University of Glasgow Student Health Service (1948–1968), responded to a questionnaire (2001) and had a screening mammogram in Scotland (1989–2002). Mammograms (median age of 59years) were classified using a six category classification (SCC) of breast density percent. Logistic regression was used to determine associations between risk factors and having a high-risk mammogram (≥25 dense). Results: In multi-variable analyses, high-risk mammograms were associated with parity (adjusted odds ratio (OR) per child: 0.77 (95 confidence interval (CI) 0.61–0.99)), age at first birth, OR per year: 1.05 (0.99–1.11), smoking at university, OR smokers versus non-smokers: 0.58 (0.36–0.92) and body mass index (BMI) while at university, OR per 1kg/m20.75 (0.69–0.82). No associations with SCC were found for age at menarche, birth weight, oral contraceptive (OC) use, height, leg length or exercise at age 20. Conclusions: We confirm previous findings that breast density is affected by reproductive events and some anthropometric measures, however most of the risk factors acting throughout the life course which we examined were not closely related to adult breast density.
Starting Page	947
Ending Page	955
Page Count	9
File Format	PDF
ISSN	09575243
Journal	Cancer Causes & Control
Volume Number	15
Issue Number	9
e-ISSN	15737225
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	mammography breast neoplasms life course epidemiology risk facors breast density Public Health/Gesundheitswesen Hematology Oncology Epidemiology
Content Type	Text
Resource Type	Article
Subject	Cancer Research Oncology

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