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. 2019 Sep 9;11(6):830–845. doi: 10.4168/aair.2019.11.6.830

Fig. 3. Correlation of FeNO (ppb) with induced sputum Eos (%) (A), nNO (ppb) (B), FEV1 (C), and FEF25–75 (D). Pearson correlation coefficients were used for expressing the correlations.

Fig. 3

Eos, Eosinophils; FEF25–75: forced expiratory flow at 25% and 75% of pulmonary volume; FeNO, fraction of exhaled nitric oxide; FEV1, forced expiratory volume in 1 second; nNO, nasal nitric oxide.