Table 1.

Demographic Information for the 473 Participants With WBS in the Study

Variable	All patients	No SVAS	Mild SVAS	Surgical SVAS	Unclassified SVAS
	n=473	n=137	n=189	n=88	n=59
Sex
Female	236	73	98	35	30
Male	237	64	91	53	29
Ancestry
European	421	119	170	80	52
Asian	5	3	0	2	0
African	14	7	5	1	1
Mixed	33	8	14	5	6
Age
Median	9	13	7	10	2.6
Age range, y	0.01–62.6	3.73–62.6	0.01–46	0.1–45	0.12–60

SVAS indicates supravalvar aortic stenosis; and WBS, Williams–Beuren syndrome.