Table 5. Association of Bone Parameters With Body Composition Adjusted for Age, Sex, Stage of Puberty, and Level of 25-hydroxy Vitamin D in girls ^a.

	Lumbar Spine BMC	Lumbar Spine BMD	Lumbar Spine BMAD	Femoral Neck BMC	Femoral Neck BMD	Femoral Neck BMAD	Total Body BMC	Total Body BMD
R Square	0.70	0.76	0.63	0.64	0.58	0.32	0.86	0.79
Age, y	1.15 ± 0.49 b (0.20)	0.01 ± 0.005 b (0.23)	0.004 ± 0.001 b (0.27)	0.04 ± 0.02 (0.17)	0.005 ± 0.004 (0.12)	0.0 (0.03)	38.76 ± 8.11 c (0.28)	0.014 ± 0.003 c (0.32)
T1	-8.90 ± 3.45 b (0.25)	-0.13 ± 0.03 c (0.32)	-0.025 ± 0.009 b (0.31)	0.04 ± 0.16 (0.03)	-0.002 ± 0.031 (0.007)	-0.001 ± 0.009 (0.02)	-27.8 ± 56.7 (0.03)	-0.017 ± 0.023 (0.06)
T2	-6.85 ± 2.21 b (0.21)	-0.06 ± 0.02 b (0.18)	-0.012 ± 0.006 b (0.15)	-0.09 ± 0.10 (0.06)	-0.036 ± 0.020 (0.14)	-0.011 ± 0.006 (0.19)	-96.6 ± 36.2 b (0.12)	-0.034 ± 0.014 b (0.13)
25 (OH) Vit. D, ng/mL	0.02 ± 0.11 (0.008)	0.001 ± 0.001 (0.04)	0.0 (0.007)	-0.001 ± 0.005 (0.006)	0.0 (0)	0.0 (0.01)	2.75 ± 1.87 (0.03)	0.001 ± 0.001 (0.02)
TBFM, Kg	-0.16 ± 0.15 (0.06)	0.001 ± 0.002 (0.01)	0.001 ± 0.0 (0.11)	0.011 ± 0.007 (0.09)	0.003 ± 0.001 b (0.16)	0.001 ± 0.0 b (0.23)	4.93 ± 2.54 (0.07)	0.0 (0.01)
Total lean mass, Kg	1.13 ± 0.16 c (0.50)	0.010 ± 0.002 c (0.39)	0.001 ± 0.0 b (0.21)	0.059 ± 0.008 c (0.61)	0.009 ± 0.001 c (0.52)	0.001 ± 0.0 b (0.29)	34.31 ± 2.67 c (0.62)	0.010 ± 0.001 c (0.56)

^a Data are expressed as B ± SE (standardized coefficient) in 9 - 18 years old Iranian female, 250 children and adolescents, (reference group for puberty is Tanner stage V, T1: Tanner stage I, II; T2: Tanner stage III, IV).

^b P < 0.05.

^c P < 0.001.