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. 2022 Feb 22;50(3):e253–e262. doi: 10.1097/CCM.0000000000005309

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Figure 2. — Primary analyses of mortality according to high-flow nasal cannula (HFNC) exposure. These Kaplan-Meier curves depict cumulative survival in (A) patients with any HFNC exposure and their matched controls as well as in (B) HFNC patient not intubated within 6 hr of admission and their matched controls. p value of less than 0.05 for comparison between HFNC patients not intubated within 6 hr of admission and their matched controls. aHR = adjusted hazard ratio.