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Article
May 28, 1997

Characteristics of Women With and Without Breast Augmentation

Author Affiliations

From the Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Wash (Drs Cook, Daling, Voigt, deHart, Malone, and Weiss); Department of Epidemiology, University of Washington, Seattle (Drs Daling, Voigt, Malone, and Weiss); Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City (Dr Stanford); Environmental Epidemiology Branch, National Cancer Institute, Bethesda, Md (Dr Brinton); Division of Epidemiology, Columbia University, New York,; NY (Dr Gammon); and Department of Biostatistics, Emory University, Atlanta, Ga (Dr Brogan).

JAMA. 1997;277(20):1612-1617. doi:10.1001/jama.1997.03540440046031
Abstract

Objective.  —To compare selected characteristics of women with and without augmentation mammaplasty to identify differences between these 2 groups of women.

Design and Study Participants.  —White women identified as controls in previously conducted population-based, case-control studies formed the study population for the present cross-sectional analysis (N=3570).

Main Outcome Measure.  —Interview information on selected characteristics was compared between women who had received augmentation mammaplasty (n=80) and other women (n=3490) using the prevalence odds ratio (pOR) as the measure of association.

Results.  —Women with breast implants were more likely to drink a greater average number of alcoholic drinks per week (for >7 drinks vs 0 drinks: pOR=2.9, 95% confidence interval [Cl]=1.5-5.5), be younger at first pregnancy (for age <20 years vs age 20-29 years: pOR=1.6,95% Cl=1.0-2.7), be younger at first birth (for age <20 years vs age 20-29 years: pOR=11.9, 95% Cl=11.1-3.3), have a history of terminated pregnancies (for ≥1 termination vs 0 terminations: pOR=2.0, 95% Cl=1.2-3.4), have ever used oral contraceptives (pOR=2.2,95% Cl=1.0-4.7), have ever used hair dyes (pOR=4.5, 95% Cl=1.3-15.4), and have had a greater lifetime number of sexual partners (for ≥14 partners vs ≤4 partners: pOR=8.9, 95% Cl=3.1-25.5) than other women. A history of smoking, lactation, high blood pressure, or thyroid disorders, as well as the number of pregnancies, full-term births, or miscarriages, differed little between women with and without implants. Women with breast augmentation were much less likely to be heavy than other women (for >74 kg vs <56 kg: pOR=0.1, 95% Cl=0.03-0.3).

Conclusion.  —The differences we found between women with and without breast implants suggest that consideration and evaluation of confounding factors in future studies will help to clarify some of the long-term health consequences of having breast implants.

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