Table 2. Standardized β-coefficients and R² -values in backward linear regression model for determinants of pQCT-bone traits in obese women.

	25(OH)D			25(OH)DFree			25(OH)DBio
Obese women N = 62	Adjusted R2	β	P	Adjusted R2	β	P	Adjusted R2	β	P
Distal radius TraD (mg/cm3)	0.089a	-0.346	0.009	0.027	-0.214	0.100	0.016	-0.189	0.147
Distal radius CSI	0.028	-0.152	0.243	0.070c	-0.255	0.049	0.072f	-0.260	0.045
Radial shaft CoD (mg/cm3)	0.016	-0.180	0.162	0.050d	-0.255	0.045	0.059g	-0.273	0.032
Tibial shaft CSI	0.146b	-0.372	0.004	0.113e	-0.317	0.012	0.107h	-0.308	0.015

Other determinants in the models were age, physical activity, and smoking.

TraD trabecular density, CSI Cortical strength index, CoD cortical density, 25(OH)D_Free = Free 25(OH)D, 25(OH)D_Bio = Bioavailable 25(OH)D.

Other remaining variables;

^aphysical activity (P = 0.124),

^bage (P = 0.058),

^csmoking (P = 0.262) and age P = 0.141,

^d -, ^e age (P = 0.074) and physical activity (P = 0.172),

^fage (P = 0.146) and smoking (P = 0.281),

^gP = 0.032,

^hage (P = 0.079) physical activity (P = 0.169).