Fig. 2From: Effectiveness of rituximab in neuromyelitis optica: a meta-analysisForest plot of the mean difference in the ARR ratio before and after rituximab therapy. The three patients of Yang2013 had no relapse after treatment and could not be estimated in the forest plot. The estimated pooled weighted mean difference was −1.56 was highly significant (p < 0.0001), however, there was a large heterogeneity of study results (I2 = 81.3%)Back to article page