Table 1.

Comparisons of demographic, clinical, and hemodynamic characteristics in world registries of pulmonary arterial hypertension

Characteristic	REVEAL 2010	French 2006	Spain 2012	China 2011	Korea 2011
No. of case	2,525	674	866	956	625
Age, yr	50 ± 14	50 ± 15	45 ± 17	36 ± 13	48 ± 16
Female sex, %	80	65	71	70	80.5
WHO III/IV, %	56	75	69	54	48.7
6MWD, m	366 ± 126	329 ± 112	382 ± 117	353 ± 127	372 ± 123
mPAP, mmHg	51 ± 14	55 ± 15	54 ± 16	63 ± 15	66 ± 22
PVRI, wood U × m²	21 ± 13	21 ± 10	NA	25 ± 14	10 ± 6

Values are presented as mean ± SEM. Reprinted from Chung et al. [9].

WHO, World Health Organization; 6MWD, 6-minute walking distance; mPAP, mean pulmonary artery pressure; PVRI, pulmonary vascular resistance index.