Fig. 7

a Presence of with IgG anti-IgE antibody in CSU populations. b Presence of IgG anti-IgE antibody in CSU populations in 5 studies, compared to healthy control groups. c Forest plot graphic assessing the relative risk of the presence of IgG anti-IgE antibody in CSU populations compared to healthy controls. M–H, Mantel–Haenszel approach