Table 2.

Statistical results of comparisons between the two subgroups of patients with PD (LPD and RPD) on motor, neuropsychological and psychiatric data

	LPD (mean ± SD)	RPD (mean ± SD)	Stat. value	p value
L-DOPA equivalent dose (mg/day)	1302.92 ± 598.45	1295.58 ± 582.22	0.20	0.96
Hoehn and Yahr score on dopa	1.04 ± 0.86	9.46 ± 28.84	0.58	0.86
Hoehn and Yahr score off dopa	2.12 ± 0.74	10.92 ± 28.38	1.64	0.44
Schwab and England score on dopa	90.00 ± 8.53	83.50 ± 27.19	0.09	0.97
Schwab and England score off dopa	72.50 ± 11.38	58.62 ± 33.52	-0.87	0.86
UPDRS-III motor score on dopa	8.37 ± 6.66	6.96 ± 4.72	-0.32	0.89
UPDRS-III motor score off dopa	30.87 ± 9.37	34.04 ± 16.09	0.32	0.89
Asymmetry index	-2.67 ± 2.31	0.50 ± 1.19	3.23	0.07
MDRS (total score)	140.67 ± 1.72	139.83 ± 3.21	-0.58	0.86
Categorical verbal fluency	27.25 ± 13.79	30.33 ± 10.67	0.84	0.85
Action (Verb) Fluency	14.50 ± 6.87	14.00 ± 6.69	-0.06	0.97
Phonemic verbal fluency	20.83 ± 7.75	22.00 ± 5.62	0.66	0.85
Stroop Test - Interference	11.90 ± 28.77	2.90 ± 6.88	-0.34	0.89
TMT B-A	68.42 ± 81.38	64.75 ± 41.85	0.84	0.85
AES	29.25 ± 7.24	32.00 ± 5.95	0.72	0.85
MADRS	2.92 ± 3.53	13.92 ± 27.85	1.82	0.36
STAI-A State	35.17 ± 21.31	45.75 ± 21.17	2.26	0.21
STAI-B Trait	40.83 ± 21.51	48.92 ± 18.76	1.97	0.33

AES Apathy Evaluation Scale, L-DOPA levodopa-equivalent daily dose, LPD patients with Parkinson’s disease exhibiting predominantly left-sided motor symptoms, MADRS Montgomery-Åsberg Depression Rating Scale, MDRS Mattis Dementia Rating Scale, RPD patients with Parkinson’s disease exhibiting predominantly right-sided motor symptoms, SD standard deviation, STAI State-Trait Anxiety Inventory, TMT Trail Making Test, UPDRS Unified Parkinson’s Disease Rating Scale

*p < 0.05