Table 5.

Frontal Regional Brain Volume Measures for ALC and CTRL (mean, sd, range)

	ALC	CTRL	t-test (2-tailed)		95% CI
Frontal ROIs
precentral	17.4 (1.9) 12.9 to 22.9	18.5 (1.7) 13.5 to 21.7	p=.003	**	[−1.81, −.37]
superior	19.3 (1.8) 15.8 to 24.6	19.2 (1.5) 16.0 to 22.5	p=.826	ns	[−.59, .73]
orbital	26.1 (2.1) 21.8 to 33.3	26.4 (1.8) 23.9 to 32.4	p=.440	ns	[−1.10, .48]
middle	25.2 (2.1) 19.8 to 31.0	25.9 (1.9) 23.5 to 31.3	p=.093	ns	[−1.49, .12]
inferior	23.8 (1.8) 20.0 to 27.6	24.1 (1.5) 20.5 to 27.4	p=.323	ns	[−.98, .33]
supplementary motor	11.2 (1.3) 8.5 to 14.1	11.4 (1.1) 9.3 to 14.1	p=.303	ns	[−.75, .24]
medial	24.7 (1.6) 21.1 to 28.2	24.9 (1.8) 21.3 to 28.8	p=.625	ns	[−.81, .49]

^**p<.01