Fig. 2From: Validation of the portable Bluetooth® Air Next spirometer in patients with different respiratory diseasesCorrelation plots between the values obtained from the two spirometers, for the spirometric parameters considered in this work: (A) FEV1, (B) FVC, (C) FEV1/FVC, (D) FEF25–75%, (E) PEF, (F) MEF25%, (G) MEF50%, (H) MEF75%Back to article page