Table 2. IGF1 (CA)_n microsatellite genotype frequencies among healthy postmenopausal women tested for plasma IGF1 level by racial/ethnic group.

	African American	Japanese American	Non-Latino White	Latino American
Genotypea	N (%)	N (%)	N (%)	N (%)
23/17	0 (0)	1 (2)	0 (0)	0 (0)
22/19	1 (1.5)	0 (0)	3 (6.4)	1 (1.5)
21/21	2 (3.0)	2 (4.0)	0 (0)	2 (2.9)
21/20	1 (1.5)	4 (8.0)	1 (2.1)	3 (4.4)
21/19	8 (12.3)	12 (24.0)	5 (10.6)	11 (16.2)
21/18	3 (4.6)	5 (10.0)	0 (0)	2 (2.9)
21/17	1 (1.5)	2 (4.0)	1 (2.1)	0 (0)
21/16	1 (1.5)	0 (0)	0 (0)	0 (0)
20/20	3 (4.6)	0 (0)	1 (2.1)	2 (2.9)
20/19	7 (10.8)	8 (16.0)	12 (25.5)	14 (20.6)
20/18	2 (3.1)	0 (0)	0 (0)	1 (1.5)
20/16	1 (1.5)	0 (0)	0 (0)	0 (0)
19/19	10 (15.4)	5 (10.0)	21 (44.7)	29 (42.7)
19/18	13 (20.0)	3 (6.0)	3 (6.4)	2 (2.9)
19/17	1 (1.5)	6 (12.0)	0 (0)	1 (1.5)
19/16	3 (4.6)	0 (0)	0 (0)	0 (0)
18/18	4 (6.2)	2 (4.0)	0 (0)	0 (0)
18/17	3 (4.6)	0 (0)	0 (0)	0 (0)
18/16	1 (1.5)	0 (0)	0 (0)	0 (0)
Non-19/non-19	22 (33.9)	16 (32.0)	3 (6.4)	10 (14.7)
Non-19/19	33 (50.8)	29 (58.0)	23 (48.9)	29 (42.7)
19/19	10 (15.4)	5 (10.0)	21 (44.7)	29 (42.7)

^aNumber of (CA) repeats for the two alleles.