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. 2026 Jan 21;12:1696945. doi: 10.3389/fmed.2025.1696945

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Copyright © 2026 Ma, Zhou and Luo.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Panel A presents a ROC curve comparing biomarkers with differing AUCs. Panel B depicts a survival probability curve for LAR groups, with blue indicating LAR less than or equal to 11.521 and red above 11.521, showing significance (p < 0.0001). Panel C illustrates a hazard ratio curve for LAR with a shaded confidence interval, noting significance (p-overall < 0.001, p-non-linear < 0.001). — The relationship between LAR and the 28-day mortality rate of patients with severe pneumonia. (A) ROC curve for 28 day mortality. (B) 28-day KM survival curve. KM curve shows the 28-day survival rates of patients with severe pneumonia at different LAR levels. (C) RCS analysis of LAR and mortality in patients with severe pneumonia.