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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2017 Sep 13;26(12):1722–1729. doi: 10.1158/1055-9965.EPI-17-0450

Figure 1. Impact of age cutpoints on risk factor analyses.

Figure 1

Case-control ORs for associations between family history of breast cancer (yes/no; panel A), waist-to-hip ratio (highest/lowest tertile; panel B), and breastfeeding history (ever/never; panel C) and premenopausal young-onset breast cancer. Cutpoints defining “young” varied at <40, <45, or <50 years of age. Error bars represent 95% CIs.