Table 2:

Comparison of neuropsychological measures between patients with Parkinson disease with and without mild cognitive impairment

Neuropsychological Measures	PD-NCI (Mean) (SD)	PD-MCI (Mean) (SD)	Adjusted P Value
Global cognition (mean) (SD)
MMSE	28.4 (1.6)	26.7 (2.6)	.016^{^a,^b}
MOCA	27.0 (2.9)	24.5 (2.4)	.018^{^a,^b}
ADAS11	6.8 (4.2)	9.8 (3.5)	.071^{^a,^b}
Global Index	0.1 (0.5)	−0.3 (0.3)	.008^{^a,^b}
Cognitive tests (mean) (SD)
Clock drawing	9.31 (1.25)	8.48 (1.47)	.126
Frontal Assessment Battery	16.69 (1.38)	15.28 (2.09)	.027
Digit Span	17.42 (3.50)	15.04 (2.24)	.015
Digit Cancellation	19.86 (6.54)	15.08 (6.45)	.063
Color Trail 1	80.48 (37.59)	137.24 (82.08)	.008
Color Trail 2	138.94 (60.75)	229.58 (103.31)	.002
Maze	18.63 (10.59)	30.80 (17.83)	.005
Maze errors	0.06 (0.30)	0.04 (0.20)	.942
ADAS: Immediate and Delayed Recall	5.08 (2.69)	7.04 (3.28)	.090
ADAS: Recognition	1.55 (2.22)	2.00 (2.50)	.644
ADAS: Language	1.15 (1.37)	2.00 (1.71)	.168
Fruit Fluency	14.11 (3.29)	11.24 (2.80)	.029
Cognitive domains (mean) (SD)
Executive function	0.4 (1.5)	−1.0 (2.0)	.023^{^a,^b}
Attention/working memory	0.8 (1.7)	−2.0 (2.4)	<.000^{^a,^b}
Visuospatial	0.0 (1.8)	−0.1 (1.4)	.919^d
Episodic memory	0.3 (1.6)	−0.6 (1.5)	.193^{^b}
Language	0.4 (1.4)	−1.0 (1.5)	.018^{^a,^b}

Note:—MMSE indicates Mini-Mental State Examination; MOCA, Montreal Cognitive Assessment; ADAS11, Alzheimer Disease Assessment Scale-Cognitive.
↵a Significant differences at P < .05 level.
↵b Analysis of covariance test, corrected for age, sex, and education.