Table 2.

Demographics of All Cohorts

	PAH Cases		Control Subjects
	JHPH	PHBI	JHH Control Subjects	Chronic Disease Control Subjects
N	73	39	39	66
Age, yr, median (IQR)	62 (38–79)	44 (20–62)	43 (26–65)	57 (40–70)
Female sex, n (%)	58 (80%)	34 (87%)	32 (82%)	38 (57%)
Race, n (%)
EA	61 (84%)	31 (80%)	32 (82%)	21 (32%)
AA	10 (16%)	6 (15%)	7 (18%)	45 (68%)
Other	2 (0%)	2 (5%)	0 (0%)	0 (0%)

Definition of abbreviations: AA = African American; EA = European American; IQR = interquartile range; JHH = Johns Hopkins healthy; JHPH = Johns Hopkins Pulmonary Hypertension; PAH = pulmonary arterial hypertension; PHBI = Pulmonary Hypertension Breakthrough Initiative.