Characteristics of the study patients.
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Definition of abbreviations: COPD, chronic obstructive pulmonary disease; % predicted, percentage of the predicted value; BMI, body mass index; MAP, mean arterial pressure; KCO, transfer factor coefficient of the lung for carbon monoxide; SpO2, oxygen saturation by pulse oximetry. Data are median [interquartile range] unless stated otherwise. †P value by Chi-square test, Fisher exact test, or nonparametric Kruskal-Wallis test, as appropriate, comparing the three populations (COPD patients, control smokers, and nonsmokers). Characteristics of the study patients.
创建时间：
2015-03-18
