Table 2

Relationships between EMP numbers and various variables in non-COPD volunteers and stable COPD patients (univariable analysis)

	VE-cadherin EMPs		PECAM EMPs		E-selectin EMPs
	r_s	p Value	r_s	p Value	r_s	p Value
Age	0.13	0.173	0.10	0.289	0.13	0.167
Body mass index	−0.21	0.029	−0.30	0.002	−0.21	0.032
Pack-years smoking index	0.08	0.383	0.03	0.738	0.09	0.342
FEV/FVC ratio	−0.61	<0.001	−0.65	<0.001	−0.62	<0.001
FEV1	−0.62	<0.001	−0.62	<0.001	−0.60	<0.001
Predicted FEV1%	−0.67	<0.001	−0.60	<0.001	−0.58	<0.001
LAA scores	0.46	<0.001	0.34	0.002	0.41	<0.001
Leucocyte counts	0.15	0.119	0.04	0.659	0.115	0.253
CRP	0.03	0.740	0.08	0.418	0.02	0.827
PaO₂	−0.12	0.201	−0.11	0.253	−0.16	0.096

Bold denotes values: p < 0.05.
Correlations were calculated using Spearman nonparametric methods.
r_s : Spearman correlation coefficient.