Table 2.

Correlations with the TAPSE/PASP ratio in patients with COPD without pulmonary hypertension.

Parameter	Pearson R	P-value	Spearman rho	P-value
Age, years	−0.316	<0.001	−0.297	<0.001
CAT score	−0.141	0.06	−0.133	0.08
Pack years	−0.153	0.03	−0.089	0.2
6MWD, m	0.314	0.007	0.326	0.005
FEV1, % pred	0.310	<0.001	0.340	<0.001
FEV1/VC max	0.235	<0.001	0.277	<0.001
TLC, % pred	−0.123	0.07	−0.092	0.2
VC, % pred	0.281	<0.001	0.274	<0.001
FVC, % pred	0.246	<0.001	0.254	<0.001
DLCO, % pred	0.423	<0.001	0.414	<0.001

6MWD, 6-min walk distance; % pred, % predicted; CAT, COPD Assessment Test; DLCO, lung diffusing capacity for carbon monoxide; FEV₁, forced expiratory volume in 1 s; FVC, forced vital capacity; max, maximum; PASP, pulmonary artery systolic pressure; TAPSE, tricuspid annular plane systolic excursion; TLC, total lung capacity; VC, vital capacity.