Table III.

Ethnic composition of infants with low TRECs and T cell lymphopenias.

Ethnicity	SCID, Leaky SCID, Omenn Syndrome, Complete DiGeorge, and Variant SCID			Other T cell lymphopenias: Syndromes with T cell impairment and Secondary T cell lymphopenia excluding preterm birth alone
	Number observed	Number expected with incidence 1/100,000	p-valuea	Number observed	Number expected with incidence 1/50,000	p-valuea
Hispanic	13	4.85	<0.001	9	9.70	NS
White	4.5	2.52	NS	8	5.04	NS
Asian	2.5	0.81	<0.05	5	1.63	<0.01
Black	1	0.53	NS	6	1.06	<0.0002
Native American	0	0.09	NS	2	0.18	<0.001
Other	0	0.54	NS	1	1.08	NS
Total	21			29

^aNS, not significant.