Table 4:

Mean global and hemispheric cortical thickness between patients with Parkinson disease with and without mild cognitive impairment

Cortical Thickness^{^a}	PD-NCI (Mean) (SD)	PD-MCI (Mean) (SD)	Adjusted P Value
Left hemisphere	2.20 (0.10)	2.13 (0.11)	.095^{^b}
Right hemisphere	2.19 (0.10)	2.13 (0.10)	.264^{^b}
Global mean cortical thickness	4.40 (0.19)	4.26 (0.21)	.151^{^b}

↵a Cortical thickness is expressed in millimeters. Significant difference is at the P < .05 level.
↵b Analysis of variance adjusting for age, sex, education.