TABLE 3:

Comparisons of MR imaging volume data in female and male adults

Variables	Female Subjects		Male Subjects		P Values
	Mean	SD	Mean	SD
Intracranial (mL)	1291.0	135.0	1425.0	138.0	.001
GM (mL)	645.9	89.6	730.6	99.3	.003
WM (mL)	469.8	73.3	489.1	69.6	.333
% GM	50.0	4.1	51.3	5.0	.302
% WM	36.4	4.0	34.4	4.1	.085
GM/WM	1.4	0.2	1.5	0.3	.078