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. 2015 May 6;15(3):205–211. doi: 10.1007/s40256-015-0120-9

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© The Author(s) 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — Logistic regression of best versus worst international normalized ratio (INR) control by quartile of patients with out-of-range INR values on demographic and health characteristics. An odds ratio >1 indicated an association with worse INR control, and an odds ratio of <1 indicated an association with better INR control. Reference region with which midwest, northeast, and south were compared: west region. DM diabetes mellitus, HF heart failure, HTN hypertension, INR international normalized ratio