Table 1. Percent distributions of the genotypes and pairwise linkage disequilibrium scores for three markers in the TH-INS-IGF2 region stratified by ethnicity.

	All racesa		Black		Caucasian		Hispanic
	Cases	Controls	Cases	Controls	Cases	Controls	Cases	Controls
	N=178 (%)	N=135 (%)	N=96 (%)	N=67 (%)	N=40 (%)	N=36 (%)	N=37 (%)	N=29 (%)
+1127 INS-PstI
CC	80	70	81	72	80	61	73	79
CT	18	26	18	27	17	33	24	10
TT	2	4	1	1	3	6	3	10
−4217 TH-PstI
CC	13	17	8	5	25	33	14	25
CT	43	31	39	20	47	42	43	36
TT	44	52	53	75	28	25	43	39
+3580 IGF2-MspI
GG	42	42	50	37	25	49	41	50
AG	40	46	37	53	55	41	32	37
AA	18	11	13	10	20	10	27	13
Linkage disequilibrium score (D′)b
+1127 INS-PstI and −4217 TH-PstI			0.76	1	1
+1127 INS-PstI and +3580 IGF2-MspI			0.85	0.80	0.87
−4217 TH-PstI and +3580 IGF2-MspI			0.49	0.45	0.31

^aSubjects with mixed ethnicity were included here, but not in the race-specific columns.

^bD′ was determined with cases and controls combined.