Correlation between endothelial function and carotid atherosclerosis in rheumatoid arthritis patients with long-standing disease

Table 3 Regression analysis between carotid IMT and FMD^a

Variable	Correlation coefficient (95% confidence interval)	Pvalue
FMD^b	-0.003 (-0.009 to 0.003)	0.35

^aCarotid IMT: carotid intima-media wall thickness, FMD: flow-mediated endothelium-dependent vasodilatation, RA: rheumatoid arthritis; ^bAdjusted for gender, age at the time of disease diagnosis and years from RA diagnosis to ultrasonography assessment.