CRP and chronic obstructive pulmonary disease: The statistical analysis results suggested that there were significant differences in the age (P=0.044), chronic obstructive pulmonary disease (COPD) (P<0.001), heart rate (HR) (P=0.049), WBC (P=0.003), CRP (P=0.002), PCT (P=0.009), Lac, ferritin (P<0.001), SOFA scores, and CURB65 scores (P<0.001) of patients between the two groups (Table 1).