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Table 2 Pre dual bronchodilation values at V1 and V4

From: Effects of combination therapy indacaterol/glycopyrronium versus tiotropium on moderate to severe COPD: evaluation of impulse oscillometry and exacerbation rate

  V1 Pre dual bronchodilation V4 Pre dual bronchodilation
R 5 Hz 0.74 ± 0.23 0.58 ± 0.13
R 20 Hz 0.45 ± 0.10 0.38 ± 0.06
X 5 Hz -0.35 ± 0.16 -0.20 ± 0.09
IC 1.63 ± 0.59 2.04 ± 0.57
SGRQ 71.5 ± 15.97 58.25 ± 15.98