Fig. 8

a Presence of anti-thyroid peroxidase antibody in CSU populations. b Presence of anti-thyroid peroxidase antibody in CSU populations in 11 studies, compared to healthy control groups. c Forest plot graphic assessing the relative risk of the presence of anti-thyroid peroxidase antibody in CSU populations compared to healthy controls, M–H, Mantel–Haenszel approach