Table 1.

Clinical Characteristics of Asian American, Black and White Adolescent Girls

	Asian American n = 15	Black n = 10	White n = 35	P	P*	P**
Age (years)	18.5 ± 0.5	19.3 ± 0.6	18.6 ± 0.3	0.5
Bone age (years)	17.5 ± 0.3	17.8 ± 0.2	17.5 ± 0.2	0.7
Menarchal age (years)	12.1 ± 0.4	12.1 ± 0.3	12.8 ± 0.2	0.2
Tanner stage (3,4, 5)	2,0,13	0,2,8	1,3,31	0.2
Height (cm)	158.8 ± 2.3	165.4 ± 2.6	165.1 ± 1.1	0.02b
Weight (kg)	55.1 ± 1.8	62.5 ± 3.7	61.0 ± 1.4	0.1
BMI (kg/m2)	21.8 ± 0.5	22.8 ± 0.9	22.3 ± 0.4	0.6
Total fat mass (kg)	16.2 ± 1.1	15.7 ± 1.9	15.9 ± 0.8	0.9
Total lean mass (kg)	38.8 ± 1.3	45.3 ± 2.4	44.0 ± 1.0	0.02bc
Percent Body Fat	28.3 ± 1.2	24.4 ± 2.0	25.4 ± 0.8	0.07
Caloric Intake (cals)	1893± 128	1879 ± 205	1835 ± 121	0.9
Vitamin D Intake (IU)	164.5 ± 23.5	177.0 ± 35.8	197.9 ± 24.5	0.7
Calcium Intake (mg/d)	818 ± 78	719 ± 123	1053 ± 91	0.07
25(OH)D (ng/mL)	22.5 ± 2.4	14.6 ± 2.0	31.6 ± 2.3	0.002a
Calcium (mg/dL)	9.1 ± 0.1	9.0 ± 0.2	9.0 ± 0.1	0.6
Spine BMD (g/cm2)	0.943 ± 0.03	1.112 ± 0.04	0.992 ± 0.02	0.0007ac	0.002ac	0.07
Spine BMD Z-score	−0.54 ± 0.25	1.1 ± 0.38	−0.07 ± 0.15	0.0005ac	0.002ac	0.06
Spine BMAD (g/cm3)	0.13 ± 0.004	0.14 ± 0.004	0.13 ± 0.002	0.004ac	0.002ac	0.03c
Hip BMD (g/cm2)	0.913 ± 0.03	1.065 ± 0.03	1.009 ± 0.02	0.001bc	0.008bc	0.03c
Hip BMD Z-score	−0.58 ± 0.27	0.77 ± 0.27	0.29 ± 0.17	0.003bc	0.01c	0.04c
FN BMD (g/cm2)	0.784 ± 0.03	0.968 ± 0.03	0.869 ± 0.02	0.0002abc	0.001ac	0.002ac
FN BMD Z-score	−0.95 ± 0.31	0.75 ± 0.30	−0.17 ± 0.16	0.0005ac	0.002ac	0.003ac
WB BMD (g/cm2)	1.037 ± 0.02	1.158 ± 0.03	1.063 ± 0.01	0.004ac	0.002ac	0.06
WB BMD Z-score	−0.97 ± 0.29	0.69 ± 0.39	−0.62 ± 0.17	0.001ac	0.002ac	0.04ac

^aWhite vs. Black p<0.05,

^bWhite vs. Asian p<0.05,

^cBlack vs. Asian p<0.05;

^*Controlled for height;

^**Controlled for height, lean mass, menarchal age, 25(OH)D;

FN: femoral neck, WB: whole body