This study aims to investigate the clinical characteristics and heterogeneities of early chronic obstructive pulmonary disease (COPD), to determine the disease development of early COPD, and to establish a multidimensional model for predicting the outcomes of early COPD.
Study Type
OBSERVATIONAL
Enrollment
84
China-Japan Friendship Hospital
Beijing, Beijing Municipality, China
RECRUITINGNumber of participants with COPD exacerbation
COPD exacerbation refers to acute deterioration of respiratory symptoms (e.g. cough, sputum, wheeze, dyspnea), especially resulting in hospital visit or admission.
Time frame: One year
FEV1
Time frame: One year
FVC
Time frame: One year
FEV1/FVC ratio
Time frame: One year
FEV1% predicted value
Time frame: One year
FVC% predicted value
Time frame: One year
The COPD Assessment Test scale
The COPD Assessment Test scores range from 0 to 40, with higher scores indicating worse symptoms.
Time frame: One year
The modified Medical Research Council dyspnea scale
The modified Medical Research Council dyspnea scores range from 0 to 4, with higher scores indicating more severe dyspnea.
Time frame: One year
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