Table 2.

Correlations between urinary calcium and bone mineral density in male calcium stone formers during random and restricted diets, and fasting

		Unadjusted (Spearman test)		Adjusted*
Z-Score	No. Pts	ρ	p Value	Partial ρ	p Value
L2-L4:
Random urine calcium	246	0.02	0.74	−0.09	0.17
Restricted urine calcium	222	0.02	0.76	−0.08	0.26
Fasting Ca/Cr†	215	−0.01	0.86	−0.03	0.71
Femoral neck:
Random urine calcium	245	0.20	0.002	0.03	0.66
Restricted urine calcium	223	0.13	0.06	0.01	0.87
Fasting Ca/Cr†	215	0.02	0.80	0.002	0.98

^*Random 24-hour and restricted urinary calcium regression adjusted for BMI, and urinary sodium and SO₄.

^†Adjusted for BMI.