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

Table 4

Multiple linear regression model analysis for 25(OH)D.

Coefficients^b
Model	Unstandardized coefficients		Standardized coefficients		Sig.
		Std.Error	Beta
(Constant)	71.315	3.552		20.077	0.000
ICTP	−1.526	0.506	−0.242	−3.017	0.003

Dependent variable: 25(OH)D.