Table 5.

Proportional global gender differences by tissue type

	GM % of ICV	WM % of ICV	TBV % of ICV	GM % of TBV	WM % of TBV
Female	53.96	31.15	85.12	63.40	36.60
Male	52.84	31.79	84.63	62.43	37.57
Effect size r	−0.28	0.22	−0.12	−0.31	0.31

Note: ICV, intracortical volume (GM + WM + cerebrospinal fluid volume); TBV, total brain volume (GM + WM volume).