Table 1.

Descriptive statistics of study participants.

Characteristics	DS + PH	DS−PH	C + PH	C−PH
Total patients (n)	12	26	15	25
Sex (n, %)
Male	7 (58.3%)	11 (42.3%)	6 (40.0%)	11 (44.0%)
Race/ethnicity (n, %)
White, non-Hispanic	9 (75.0%)	16 (61.5%)	10 (66.7%)	17 (68.0%)
Hispanic/Latino	2 (16.7%)	8 (30.8%)	3 (20.0%)	1 (4.0%)
Black or African American, non-Hispanic	0 (0.0%)	2 (7.7%)	0 (0.0%)	0 (0.0%)
Asian	1 (8.3%)	0 (0.0%)	2 (13.3%)	5 (20.0%)
Unknown	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (8.0%)
Mean age at blood draw in years (SD)	6.13 (6.30)	6.16 (4.63)	9.12 (5.80)	7.57 (5.43)

DS: Down syndrome; PH: pulmonary hypertension.