Association of Angiogenic and Inflammatory Markers with Power Doppler Ultrasound Vascularity Grade and DAS28-CRP in Early Rheumatoid Arthritis: A Comparative Analysis

Table 3

(a) Logistic regression analysis of PDUS with selected clinical features

Dependent Variables		PDUS
R^2		0.5320
Significance Level		0.0001
Variable	Coefficient	Std.Error	Wald	P	Odds ratio	95CI
ANG-1	-0.0066069	0.0038852	2.8919	0.0890	0.9934	0.9859 to 1.0010
ANG-2	-0.000063268	0.000086613	0.5336	0.4651	0.9999	0.9998 to 1.0001
TNF-α	0.0012117	0.00055438	4.7775	0.0288	1.0012	1.0001 to 1.0023
VEGF	0.0079439	0.0035127	5.1142	0.0237	1.0080	1.0011 to 1.0149

(b) Multiple linear regression analysis of DAS28 CRP with selected clinical features

Dependent Variables		DAS28 CRP
Coefficient of determination R^2		0.1
R^2-adjusted		0.02
Multiple correlation coefficient		0.32
Model 1
Independent variables	b	Std Error	^rpartial	t	p value
ANG-2	0.0003466	0.0009471	0.05572	0.366	0.7162
ANG-1	0.00002395	0.00002459	0.1469	0.974	0.3355
TNF-α	0.0001029	0.00008316	0.1854	1.237	0.2228
VEGF	-0.0005151	0.0003407	-0.2247	-1.512	0.1378

R², multiple coefficient of determination; b standard regression coefficient. For abbreviations refer to Table 2.