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. 2016 Jan 4;9:7. doi: 10.1186/s13104-015-1810-8

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© Haraguchi et al. 2015

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. 3 — Relationships between pulmonary hypertension and age. a Comparisons of prevalence of possible pulmonary hypertension (eSPAP ≥35 mmHg) between COPD patients aged <75 and ≥75 years in different stages of COPD, *p = 0.02, b comparisons of eSPAP between COPD patients aged <75 and ≥75 years after controlling for differences in LAA %. Data are presented as mean ± SD. *p = 0.001