Table 4.

ESC/ERS risk score 2015 assessments included

ESC/ERS risk score groups	Whole cohort		PAH		PAH with comorbidities
Baseline values	Kaplan-Meier p-value	n	Kaplan-Meier p-value	n	Kaplan-Meier p-value	n
Survival
6MWD	0.010	113	0.019	68	0.636	45
NT-proBNP	0.031	104	0.032	64	0.260	40
WHO functional class	0.004	126	0.016	77	0.491	49
Right atrial area	0.045	135	0.013	84	0.774	51
Time to first clinical worsening event
6MWD	0.011	112	0.031	67	0.129	45
NT-proBNP	0.012	103	0.002	63	0.194	40
WHO functional class	0.006	125	0.079	76	0.547	49
Right atrial area	0.001	134	0.034	83	0.244	51

6MWD 6-min walking distance, NT-proBNP N-terminal pro brain natriuretic peptide, WHO World Health Organization