Table 2.

Demographic characteristic of patients potentially with rare diseases in combined administrative and clinical datasets; South Carolina, 2009–2014

	Spina Bifida†		Muscular Dystrophy†		Fragile X†		Any of the Three
	N	%	N	%	N	%	N	%
All	3252	61.2	1737	32.7	319	6.1	5308	100
Sex
Female	1990	61.2	795	45.8	90	28.2	2875	54.2
Male	1258	38.7	932	53.7	229	71.8	2419	45.6
Missing/Unknown	4	0.1	10	0.6	0	0.0	14	0.3
Race/Ethnicity
White	1707	52.5	1053	60.6	135	42.3	2895	54.5
African American	586	18.0	271	15.6	56	17.6	913	17.2
Hispanic	80	2.5	44	2.5	7	2.2	131	2.5
Other	91	2.8	45	2.6	15	4.7	151	2.8
Missing/Unknown	788	24.2	324	18.7	106	33.2	1218	22.9
Age Group
0–17	1382	42.5	505	29.1	191	59.9	2078	39.1
18–24	301	9.3	87	5.0	29	9.1	417	7.9
25–44	948	29.2	397	22.9	59	18.5	1404	26.5
45–64	482	14.8	482	27.7	28	8.8	992	18.7
65+	139	4.3	266	15.3	12	3.8	417	7.9

^†Proportion differ significantly, α = 0.05, by condition