Table 9.

Correlation of PCR levels with the independent variables.

Variable dependent	Variables	Correlation	p value
	BDI	0.39	0.11
	6MWD	0.33	0.18
ΔCRP (%)	Symptom	−0.20	0.42
	Activity	−0.05	0.82
	Impact	−0.16	0.51
	Total	−0.16	0.53

CRP, C-reactive protein; 6MWD, six-minute walk test; BDI, basal dyspnea index. p < 0.05, comparison evaluated by the Pearson correlation test.