Table 3. Univariate and multivariate regression analyses of fibrinogen plasma concentrations and haemodynamic and disease severity markers in CTEPH patients.

	Univariate analysis†			Multivariate analysis*
Variable	R2	Beta	P value	R2	Beta	P value
RAP	0.244	2.309	0.002	0.269	2.186	0.008
mPAP	0.137	4.284	0.011	0.254	4.047	0.015
PVR	0.100	105.581	0.041	0.194	99.049	0.055
CI	0.096	−0.127	0.043	0.362	−0.098	0.076
6-MWD	0.113	−31.569	0.048	0.435	−21.129	0.124
PaCO2	0.096	−0.129	0.058	0.113	−0.115	0.137

^†Univariate analysis includes plasma fibrinogen concentration and specific variable.

*Multivariate analysis includes plasma fibrinogen concentration, age, gender and WHO functional class plus specific variable. For abbreviations see text.