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The chronic obstructive pulmonary disease (COPD) assessment test (CAT) is a validated simple instrument to assess health status, and it correlates well with the severity of airway obstruction in COPD patients. However, little is known about the relationships between CAT scores and quantitative computed tomography (CT) measurements of emphysema and airway wall thickness in COPD patients in the People's Republic of China.

The COPD assessment test correlates well with&nbsp;the computed tomography measurements in&nbsp;COPD patients in China

The COPD assessment test correlates well with the computed tomography measurements in COPD patients in China