Table 3.

Group comparison of subcortical volume analysis.

Subcortical volume	Patient group	Control group	p-Valuea, ⁎	Difference between means (%)
Putamen
L	5213 ± 167.9	5994 ± 117.8	< 0.001	− 13.0
R	5248 ± 164.8	6002 ± 115.6	< 0.001	− 12.6
Caudate
L	3274 ± 88.0	3663 ± 61.7	< 0.001	− 10.6
R	3276 ± 90.3	3688 ± 63.3	< 0.001	− 11.2
Accumbens area
L	557 ± 33.6	703 ± 23.6	< 0.001	− 20.8
R	579 ± 34.4	736 ± 24.1	< 0.001	− 21.3

Data are presented as mean ± standard deviation.

Volume expressed in mm³.

L, left; R, right.

^aAge, gender, and total intracranial volume are included as covariates in comparisons between the patient and control groups.

^⁎Only effects with significant values after correction for multiple comparison.