. Author manuscript; available in PMC: 2010 Apr 1.

Published in final edited form as: Growth Horm IGF Res. 2008 Sep 21;19(2):146–155. doi: 10.1016/j.ghir.2008.08.005

Table 3.

Crude and adjusted means for IGF-I, IGFBP-3 and their ratio.

Race/Ethnicity	N	Males^*			N	Females^*
Race/Ethnicity	N	Crude Mean (S.E.)	Adj. for Age (S.E.)	Adj. for Age +BMI^* (S.E.)	N	Crude Mean (S.E.)	Adj. for Age (S.E.)	Adj. for Age + BMI (S.E.)
A. IGF-I (ng/ml)
NH White	1156	287 (3.6)	289 (3.4)	289 (3.3)^a	1401	256 (4.9)	259 (3.7)	258 (3.7)^b
NH Black	702	284 (4.3)	279 (3.5)	279 (3.5)^a	940	281 (4.9)	272 (4.8)	275 (4.6)^a
Mex. Amer.	777	265 (4.2)	243 (3.5)	244 (3.4)^b	836	249 (6.6)	224 (4.7)	226 (4.6)^c
B. IGFBP-3 (ng/ml)
NH White	1156	4437 (46)	4453 (44)	4453 (44)^a	1401	4583 (36)	4601 (39)	4605 (38)^a
NH Black	702	4072 (39)	4033 (41)	4034 (41)^b	940	4368 (58)	4331 (55)	4314 (55)^b
Mex. Amer.	777	4184 (38)	3998 (35)	3996 (35)^b	836	4333 (60)	4158 (52)	4145 (51)^b
C. Ratio IGF-I/IGFBP-3
NH White	1156	0.234 (0.003)	0.235 (0.003)	0.235 (0.003)^b	1401	0.201 (0.003)	0.201 (0.003)	0.200 (0.003)^b
NH Black	702	0.252 (0.003)	0.249 (0.003)	0.249 (0.003)^a	940	0.226 (0.004)	0.228 (0.004)	0.231 (0.004)^a
Mex. Amer.	777	0.240 (0.003)	0.220 (0.003)	0.221 (0.003)^c	836	0.190 (0.003)	0.191 (0.003)	0.194 (0.003)^b

superscripts indicate significantly difference adjusted means