Table 1. The 2 × 2 contingency table for driver genes and non-driver genes embedded in “Subgraph module” and “non-subgraph module”.

	Subgraph module	Non-subgraph module	Total
Driver genes	a	b	a + b
Non-driver genes	c	d	c + d
Total	a + c	b + d	a + b+ c + d