TABLE 6.

Gray matter/white matter ratio comparison between three groups (normal group, anxiety group, and depression group) at beginning time and follow up time.

		Number	Lesion		Comparison between groups
			Mean	SD		T value	P value
Beginning	Normal group	71	0.774	0.013	Anxiety group Normal group	–0.176	0.860
	Anxiety group	30	0.773	0.013	Depression group Normal group	1.686	0.094
	Depression group	19	0.779	0.015	Depression group Anxiety group	1.616	0.109
Follow up	Normal group	71	0.778	0.019	Anxiety group Normal group	–0.929	0.355
	Anxiety group	30	0.774	0.017	Depression group Normal group	0.686	0.494
	Depression group	19	0.774	0.019	Depression group Anxiety group	0.086	0.932

There is no significant difference between groups and times of Gray matter/white matter ratio.