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. 2021 Oct 11;7(4):00074-2021. doi: 10.1183/23120541.00074-2021

FIGURE 3.

FIGURE 3

Asthmatic and COPD patients require a greater number of measurements to achieve a CoV Rrs at 5 Hz of ≤5%, ≤10%, ≤15% or ≤20%. The number of measurements needed for 95% of the healthy (black squares), asthmatic (orange triangles) or COPD (green circles) populations to obtain a CoV(Rrs5) of ≤5% (a), ≤10% (b), ≤15% (c), ≤20% (d), when the closest three measurements were selected from four to eight measurements (N=15 for all groups). CoV: coefficient of variation; Rrs5: resistance of the respiratory system at 5 Hz.