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. 2023 Jul 18;17:17534666231186732. doi: 10.1177/17534666231186732

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© The Author(s), 2023

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 4. — Correlation between clinical variables and NIRS-derived variables. (a) FVC and 6MWD, (b) FVC and Nadir SpO₂, (c) DLCO and nadir SpO₂, and (d) 6MWD and O₂Hb.

6MWD, 6-min walking distance; DLCO, diffusing capacity of the lung for carbon monoxide; FVC, forced vital capacity; O₂Hb, oxyhemoglobin.