Combined forced oscillation and fractional-order modeling in patients with work-related asthma: a case-control study analyzing respiratory biomechanics and diagnostic accuracy.

This increase was more discriminating in the 4–16 Hz range, which resulted in increased values of R 0 and R 4 (Table 3 , Additional file 1 : Figure S1), as well as highly significant reductions in ventilation homogeneity ( S and R 4 − R 20 ).

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