Table 3. Summary of risk score in PAH.

Variable	REVEAL	Swedish PAH register	COMPERA	French pulmonary hypertension network
Required variable	12–14	8	8	4
Patients at baseline	2,716	530	1,588	1,017
Patients at follow-up	2,529	383	1,094	1,017
Associated PAH included	Yes	Yes	Yes	No
Definition of low risk	<6 REVEAL score	<1.5 average score	<1.5 average score	3–4 out of 4 low-risk criteria
1-year mortality by risk (low/intermediate /high)%	<2.6/7.0/>10.7	1.0/7.0/26.0	2.8/9.9/21.2	1.0/NA/13.0–30.0

Adapted from (6). PAH, pulmonary arterial hypertension.