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. 2021 Jul;13(7):4418–4426. doi: 10.21037/jtd-21-25

Figure 4.

Figure 4

The fraction of exhaled nitric oxide (FeNO) value showed a significant correlation between the two analyzers. (A) Linear regression with 95% confidence interval. (B) Altman-Bland plot (right panel) of the RuiBreath vs. NIOX VERO values in 197 asthmatic patients.