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Fig. 2 | Respiratory Research

Fig. 2

From: Associations of airway tree to lung volume ratio on computed tomography with lung function and symptoms in chronic obstructive pulmonary disease

Fig. 2

Airway and lung measures and severity of COPD (A and B) The airway wall volume (AWV) and right lung volume (rLV) are adjusted by the predicted total lung capacity (pTLC). (C) The airway wall volume percent (AWV%) was the percentage ratio of the AWV to right lung volume. Statistical analysis with ANOVA showed significant differences in AWV/pTLC (p = 0.00001), rLV/pTLC (p = 0.00001), and AWV% (P = 0.000001) among different GOLD spirometric grade

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