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. 2017 Jun 2;18:112. doi: 10.1186/s12931-017-0598-6

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted 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. 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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Fig. 1 — Areas under the curve and 95% confidence intervals for predictors of 5-year mortality compared to predictors of 2-year mortality in COPD patients. ADO, age, dyspnoea, airflow obstruction; STS, sit-to-stand; BMI, body mass index; BODE, BMI, airflow obstruction, dyspnoea, exercise capacity; MRC, Medical Research Council dyspnoea scale; FEV1, forced expiratory volume in 1 s