Table 1.

Demographic and clinical characteristics of PD patients with and without depression

	DPD (N = 10)	NDPD (N = 19)	P
Age (years)	59.79 ± 10.45	63.40 ± 12.27	0.41
Sex(female/male)	6/4	8/11	0.36
Course of PD (years)	2.55 ± 2.98	2.15 ± 1.77	0.65
MDS-UPDRS III	21.75 ± 7.26	18.89 ± 7.07	0.32
MMSE	26.90 ± 2.33	27.84 ± 1.57	0.21
HAMD	12 (11, 26)	3.5 (2, 5)	< 0.0001*
Whole-brain complexity	1.2 ± 0.03	1.26 ± 0.03	0.0005*

DPD, Parkinson’s disease with depression; NDPD, Parkinson’s disease without depression; MDS-UPDRS III, part III of MDS-Unified Parkinson’s Disease Rating Scale (MDS-UPDRS); MMSE, Mini–Mental State Exam; HAMD, Hamilton Depression Scale.*p < 0.05