Effect of risedronate on speed of sound in postmenopausal women with osteoporosis

Table 1 Baseline anthropometry, speed of sound and biochemical markers of the study subjects

	mean ± SD	Range
Age (yr)	71.1 ± 9.7	49-88
Height (m)	1.54 ± 0.06	1.40-1.70
Body weight (kg)	53.2 ± 7.6	40-80
Body mass index (kg/m2)	22.4 ± 3.1	18.7-35.0
SOS (m/s)	1473 ± 13	1442-1500
SOS as % of YAM	68.9 ± 5.9	53-79
Calcium (mg/dL)	9.2 ± 0.4	8.6-10.2
Phosphorus (mg/dL)	3.5 ± 0.3	2.9-4.5
ALP (IU/L)	229 ± 63	142-365
Urinary NTX (nmol BCE /mmol Cr)	56.2 ± 17.8	35.2-99.9

The normal ranges of serum calcium, phosphorus, and alkaline phosphatase (ALP) were 8.4-10.2 mg/dL, 2.5-4.5 mg/dL, and 100-340 IU/L, respectively. The standard range of urinary cross-linked N-terminal telopeptides of type I collagen (NTX) was 9.3-54.3 nmol bone collagen equivalent (BCE)/mmol Creatinine (Cr), and the cutoff values for bone loss and vertebral fracture risk were 35.3 and 54.3 nmol BCE/mmol Cr, respectively. SOS: Speed of sound; YAM: young adult mean.