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. 2021 Apr 27;59(5):596–601. doi: 10.1016/j.resinv.2021.04.002

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© 2021 Published by Elsevier B.V. on behalf of The Japanese Respiratory Society.

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Fig. 1 — Correlation between KL-6 levels and SpO₂/FiO₂ ratio (a) on admission and (b) when the lowest SpO₂/FiO₂ ratio was observed, using Pearson's correlation coefficients. KL-6, Krebs von den Lungen-6; SpO₂, saturation of percutaneous oxygen; FiO₂, fraction of inspired oxygen.