Fig. 2. Patient clusters derived through heterogeneity through discriminative analysis (HYDRA).
Left: HYDRA identified two clusters of patients based on the adjusted Rand index (ARI). This is shown as a clear peak in ARI values for the 2-cluster solution. Right: The two clusters differed in global and regional cortical thickness; the Cohen’s d of these regional differences is mapped onto the corresponding cortical regions (additional details in Supplemental Material).