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Figure 2 | Respiratory Research

Figure 2

From: Small airway dysfunction is associated to excessive bronchoconstriction in asthmatic patients

Figure 2

Relationship between ∆FVC% and PD 20 methacholine in 63 asthmatic patients with R5-R20 ≤ 0.03 kPa s l−1( open circles ) and with R5-R20 > 0.03 kPa s l−1( closed circles ). The interrupted line represents the median value of ∆FVC%, corresponding to 14%. Twenty-one out of 30 patients with R5-R20 > 0.030 kPa s l−1 and 10 out 33 patients with R5-R20 ≤ 0.030 kPa s l−1 had a ∆FVC% value higher than the median value of ∆FVC% of the entire group of patients (χ2 = 7.222, p = 0.007).

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