Description of the cluster structures used in the simulation studies.

<p>We simulated three cluster types: “common” (<i>Cluster pattern 1</i>), “nested” (<i>Cluster pattern 2</i>) and “overlapping” (<i>Cluster pattern 3</i>) that are shared across three or more conditions. For <i>Cluster pattern 2</i> and <i>Cluster pattern 3</i>, the “intersection cluster” is defined by the nodes in common to all conditions (red square) whereas the “union cluster” is defined by the nodes in common to all conditions plus the nodes present in individual conditions (black square).