Fig. 2

Forest plot indicating mean levels of calprotectin in autistic children and adolescents relative to control participants. A Babinská, et al. [40] reported comparisons between calprotectin in autistic participants and calprotectin in siblings and unrelated controls. Individual comparison ratios were generated for both groups. B The two autistic groups in Pusponegoro et al. were combined for analysis C Calprotectin data were extracted from the supplementary materials of Fernell et al. [32] and the control group data were published in Fagerberg et al. [45]