Table 4. Multivariate linear regression analysis of body indexes for each T-score.

	B	SE	P-value	R2
Lumbar
Weight (kg)	0.411	0.006	< 0.001	0.260
BMI (kg/m2)	0.328	0.017	< 0.001	0.262
ASMI (kg/m2)	0.268	0.065	< 0.001	0.208
Femur
Weight (kg)	0.416	0.004	< 0.001	0.321
BMI (kg/m2)	0.329	0.011	< 0.001	0.321
ASMI (kg/m2)	0.373	0.042	< 0.001	0.313
Femur neck
Weight (kg)	0.319	0.004	<0.001	0.305
BMI (kg/m2)	0.251	0.012	<0.001	0.305
ASMI (kg/m2)	0.284	0.045	<0.001	0.300

Adjusted for age, gender, height, smoking frequency, vitamin D, PTH and ALP levels, and FEV₁ (%). B, standardized regression coefficient; SE, standard error; R2, adjusted R²; BMI, body mass index; ASMI, appendicular skeletal muscle mass index.