Table 5—

Multiple logistic regression analysis with survival as dependent variable

Independent variable	OR (95% CI)	p-value
6MWD	1.006 (1.001–1.010)	0.022
RAP	0.874 (0.788–0.968)	0.010
Cardiac index	1.041 (0.340–3.185)	0.944
P_a,CO₂
At baseline	1.166 (1.020–1.333)	0.025
At 3 months	1.512 (1.224–1.867)	< 0.001

OR: odds ratio; CI: confidence interval; 6MWD: 6-min walking distance; RAP: right atrial pressure; P_a,CO₂: carbon dioxide arterial tension.