1. Bland–Altman plot of projected apnoea threshold of measurement 1 versus 2. a) Rebreathing (R) method (n=20); b) steady-state (SS) method (n=18).
Bland–Altman plot of projected apnoea threshold of measurement 1 versus 2. a) Rebreathing (R) method (n=20); b) steady-state (SS) method (n=18). Mean of projected apnoea threshold (pAT) on the x-axis in L·min−1·kPa−1 and the difference between pAT on the y-axis in L·min−1·kPa−1. The mean pAT is ∼0.3 kPa in both methods. The limits of agreement of pAT-R are ∼1.5 kPa and of pAT-SS are ∼2.5 kPa. There is no trend in the mean projected apnoea threshold.
Denise C. Mannée et al. ERJ Open Res 2018;4:
©2018 by European Respiratory Society