Table 2.

General information on the subjects.

Parameters	Subjects		P value
	Healthy (n = 90)	Osteoporosis (n = 90)
Age (years), mean ± SD	65.46 ± 5.54	66.48 ± 6.16	0.243
Gender (male/female)	49/41	35/55	0.037
BMI (kg/m2), mean ± SD	23.57 ± 3.09	23.12 ± 2.89	0.313
BMD
LBMD (g/cm2), mean ± SD	0.99 ± 0.13	0.80 ± 0.12	<0.001
TBMD (g/cm2), mean ± SD	0.95 ± 0.12	0.77 ± 0.12	<0.001
25(OH)D (ng/mL), mean ± SD	31.23 ± 3.17	23.02 ± 3.11	<0.001
Calcium (mmol/L), mean ± SD	2.44 ± 0.19	2.30 ± 0.21	<0.001
Phosphorus (mmol/L), mean ± SD	1.31 ± 0.16	1.13 ± 0.15	<0.001
ALP (U/L), mean ± SD	122.19 ± 14.98	139.57 ± 15.90	<0.001

BMI, body mass index; BMD, bone mineral density; LBMD, lumbar bone mineral density; TBMD, total hip bone mineral density; 25(OH)D, 25-hydroxyvitamin D; ALP, alkaline phosphatase. All data were presented as the mean ± standard deviation or n.