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. 2014 Apr 3;15(1):37. doi: 10.1186/1465-9921-15-37

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Copyright © 2014 Horita et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), 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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Hazard ratio for death by long-term oral corticosteroids (LTOC) treatment. Model 1: multiple-variable Cox model in pre-matching cohort. Model 2: single-variable Cox model in the propensity-score-matched cohort. Model 3: multiple-variable Cox model in the propensity-score-matched cohort. [ ]: 95%CI.