Table 4.

Comparison of basic parameters between CI and PD-CI groups

Index	CI	PD-CI	P	Significant differences, Wilcoxon test
Age	79.79 ± 6.31	69.07 ± 6.73	< 0.0001	****
MMSE	26.71 ± 2.26	22.19 ± 3.30	< 0.0001	****
MoCA	19.43 ± 2.41	19.42 ± 3.42	0.9554	Non-significant
Education	9.64 ± 3.73	8.65 ± 2.39	0.2918	Non-significant

PD: Patients with Parkinson’s disease but without cognitive impairment; CI: non-Parkinson’s disease patients that had cognitive impairment; MMSE: Mini-Mental State Examination; MoCA: Montreal Cognitive Assessment.