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. 2014 Sep 20;16:439. doi: 10.1186/s13058-014-0439-1

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© Eng et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Breast cancer risk associated with aggregated scores produced by combining readings from two fully-automated volumetric methods. *Aggregated categories based on tertiles as defined among control women: 1: if classified in the bottom tertile (T1) by both methods; 2: if classified in T1 by one method but in the middle tertile (T2) by the other; 3: if classified in T1 by one method but in the top tertile (T3) by the other, or in T2 by both methods, or in T2 by one method but in T3 by the other; 4: if classified in T3 by both methods. OR, odds ratio; Pt, P for linear trend; SXA, single energy x-ray absorptiometry.