KMID : 0939920110430010042
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´ëÇѾÏÇÐȸÁö 2011 Volume.43 No. 1 p.42 ~ p.48
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Reproductive and Hormonal Factors Associated with Fatty or Dense Breast Patterns among Korean Women
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Jeon Jei-Hun
Kang Jung-Hyun Kim Yeon-Ju Lee Hoo-Yeon Choi Kui-Son Jun Jae-Kwan Oh Dong-Kwan Lee Chang-Yoon Ko Kyung-Ran Park Eun-Cheol
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Abstract
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Purpose: Dense breasts have been suggested as a risk factor for breast cancer, but controversy still remains. This study evaluates the association of reproductive and hormonal factors with dense breasts among Korean women.
Materials and Methods: Using a cross-sectional design, 516 women were recruited and classified for breast density patterns as being either fatty or dense, using the Breast Imaging Reporting and Data System (BI-RADS) of the American College of Radiology. Univariate and multivariate logistic regression models were used for statistical analysis.
Results: In univariate logistic regression, older age, higher body mass index, older age at menarche, and oral contraceptive use were associated with more fatty breasts. On the contrary, longer duration of education, alcohol consumption, lower parity, menopause and use of hormone replacement therapy were associated with dense breasts. After adjustment, age and body mass index were inversely associated with breast density (p-value for trend <0.01, respectively), whereas nulliparous and premenopausal status were positively associated. Compared to women who had ¡Ã2 children, nulliparous women had an 11.8-fold increase of dense breasts (p-value for trend <0.01). Compared to postmenopausal women, premenopausal women had 2.4-fold increase of dense breasts (odds ratio, 2.42; 95% confidence interval, 1.36 to 4.32).
Conclusion: Young age, lower body mass index, lower parity, and premenopausal status were significantly associated with dense breasts in Korea.
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KEYWORD
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Breast, Mammography, Risk factors, Cross-sectional study, Korea
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