Table 3.

Univariate analyses in boys of bone density measures with body composition parameters, bone age, hormone levels and depression severity scores (using the CDI and CDRS-R T-scores)

	BMI		Lean mass		Fat mass*		Bone age*		Free androgen index		Estradiol*		CDI*		CDRS-R*
	r	p	r	p	r	p	r	p	r	p	r	p	r	p	r	p
Lumbar spine BMD	0.67	< 0.001	0.84	< 0.001	0.27	0.14	0.44	0.012	0.58	< 0.001	0.58	< 0.001	0.23	0.22	0.01	0.95
Lumbar spine BMD Z-score	0.61	< 0.001	0.63	< 0.001	0.38	0.032	0.12	0.53	0.46	0.011	0.51	0.003	0.13	0.50	−0.07	0.71
Lumbar spine BMAD	0.57	< 0.001	0.68	< 0.001	0.12	0.51	0.47	0.007	0.52	0.003	0.54	0.001	0.08	0.68	−0.10	0.60
Lumbar spine BMAD Z-score	0.55	0.001	0.59	< 0.001	0.18	0.32	0.28	0.13	0.49	0.006	0.58	< 0.001	0.11	0.57	−0.09	0.64
Hip BMD	0.71	< 0.001	0.85	< 0.001	0.36	0.043	0.51	0.003	0.54	0.002	0.53	0.002	0.11	0.55	−0.07	0.71
Hip Z-score	0.67	< 0.001	0.72	< 0.001	0.43	0.014	0.29	0.11	0.51	0.004	0.52	0.002	0.15	0.44	−0.07	0.70
Femoral Neck BMD	0.72	< 0.001	0.86	< 0.001	0.36	0.042	0.52	0.003	0.58	< 0.001	0.56	< 0.001	0.22	0.24	0.01	0.95
Femoral Neck BMD Z-score	0.74	< 0.001	0.80	< 0.001	0.50	0.004	0.40	0.025	0.57	< 0.001	0.58	< 0.001	0.19	0.31	−0.002	0.99

^*Spearman’s rho used to assess correlations

Significant associations are in bold

BMD: bone mineral density; BMAD: bone mineral apparent density