Figure 5From: Patient Discomfort Associated with the Use of Intra-arterial Iodinated Contrast Media: A Meta-Analysis of Comparative Randomized Controlled Trials Bivariate fixed-effects meta-regression analysis with continuous covariates. The open circles in each panel represent the primary trials. The area of each circle is directly proportional to the relative weight of that study. The solid line is the regression line. (Panels A and B represent the incidence of CM-associated pain with severity; Panels C and D represent CM-associated warmth with severity).Back to article page