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Figure 3 | Respiratory Research

Figure 3

From: Acute bronchodilator responses decline progressively over 4 years in patients with moderate to very severe COPD

Figure 3

Mean (±SD) % predicted (Δ = post-bronchodilator [% predicted] - minus pre-bronchodilator [% predicted] FEV1 and FVC) bronchodilator responses over 4 years by treatment group. Mean % predicted FEV1 responses are shown for the placebo group (A) and the tiotropium group (B) separately. Mean percent predicted responses in FVC are shown for the placebo group (C) and the tiotropium group (D) separately.

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Respiratory Research

ISSN: 1465-993X

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