Fig. 3From: Validation of the portable Bluetooth® Air Next spirometer in patients with different respiratory diseasesBland-Altman plots for the evaluated spirometric parameters: (A) FEV1, (B) FVC, (C) FEV1/FVC, (D) FEF25–75%, (E) PEF, (F) MEF25%, (G) MEF50%, (H) MEF75%. Dashed lines represent the mean difference between measurements and dotted lines the 95% limits of agreementBack to article page