Table 2 (A) Percentage of features with significant differences in distribution before and after harmonization by the GMM groupings. Feature names indicate the feature whose distribution was used to generate the GMM scan grouping. GMM scan groupings are obtained by selecting the best GMM model from a set composed of GMM models generated from each of the features such that the final GMM scan grouping is estimated from a single feature. (B) Percentage of features with significantly different distributions attributable to batch effects in the original features and after applying standard ComBat, harmonizing by the GMM grouping alone (GMM), and harmonizing by both the GMM grouping and known imaging parameter batch effects (GMM + ComBat (CE)).

From: Generalized ComBat harmonization methods for radiomic features with multi-modal distributions and multiple batch effects