Table 1.

Patient characteristics.

Characteristic	All	Vertebral fracture	Hip fracture	Distal radius fracture	Proximal humeral fracture	P-value
Number of patients	317	132	121	46	18
Age, yr	80.7 ± 0.54	80.1 ± 0.84	83.9 ± 0.77	76.1 ± 1.50	75.6 ± 2.07	<0.001
Albumin, g/dL	3.94 ± 0.26	3.36 ± 0.06	3.36 ± 0.06	4.04 ± 0.06	3.61 ± 0.08	0.34
Albumin-corrected calcium, mg/dL	9.19 ± 0.03	9.22 ± 0.04	9.21 ± 0.07	9.19 ± 0.09	9.17 ± 0.14	0.63
Phosphate, mg/dL	3.37 ± 0.04	3.43 ± 0.04	3.32 ± 0.07	3.32 ± 0.08	3.25 ± 0.17	0.48
25-hydroxyvitamin D, ng/mL	17.3 ± 0.82	16.4 ± 1.07	17.1 ± 1.45	19.5 ± 2.34	20.3 ± 3.90	0.51
Tartrate-resistant acid phosphatase 5b, mU/dL	391 ± 12.2	345 ± 15.0	449 ± 23.4	398 ± 29.9	310 ± 34.1	<0.001
Undercarboxylated osteocalcin, ng/mL	8.41 ± 1.84	9.25 ± 4.00	9.05 ± 1.98	5.49 ± 0.71	4.14 ± 1.02	0.87
Lumbar spine BMD, g/cm2	0.74 ± 0.01	0.71 ± 0.01	0.74 ± 0.02	0.78 ± 0.02	0.78 ± 0.03	0.07
Femoral neck BMD, g/cm2	0.49 ± 0.01	0.49 ± 0.01	0.46 ± 0.01	0.57 ± 0.02	0.54 ± 0.03	<0.001

Values are presented as mean ± standard error.

BMD, bone mineral density.