Serum Vitamin D and Pyridinoline Cross-Linked Carboxyterminal Telopeptide of Type I Collagen in Patients with Ankylosing Spondylitis

Table 3

Multiple linear regression model analysis for hip BMD.

Coefficients^a
Model	Unstandardized coefficients		Standardized coefficients		Sig.
		Std.Error	Beta
(Constant)	−0.523	0.265		−1.971	0.051
ICTP	−0.053	0.018	−0.220	−2.852	0.005
BASDAI	−0.106	0.035	−0.224	−3.008	0.003
Disease duration	0.033	0.012	−0.208	−2.795	0.006
25(OH)D	0.007	0.003	0.180	2.332	0.021

Dependent variable: hip BMD -score.