Table 1. Patient demographics and risk factors in osteoporosis.

Variable	Cases (n=300)	Controls (n=350)	P
Age (years)	46.70 ± 4.47	46.88 ± 5.01	0.641
BMI (kg/m2)	24.40 ± 1.45	24.24 ± 1.45	0.179
HDL (mmol/l)	1.21 ± 0.35	1.24 ± 0.36	0.241
LDL (mmol/l)	2.61 ± 0.84	2.43 ± 0.75	0.050
TC (mmol/l)	4.48 ± 0.96	4.38 ± 0.84	0.143
T-score	−3.02 ± 0.58	0.13 ± 0.11	<0.001
Z-score	−2.08 ± 0.47	0.63 ± 0.18	<0.001