Table 2.

Correlations in Parkinson’s Disease patients, between neuropsychiatric tests scores, dopamine replacement therapy and response inhibition tests scores.

	Levodopa eq. r to z (p level)	M-WCST-sf P r to z (p level)	SWCT-sv IE-T r to z (p level)	SWCT-sv IE-E r to z (p level)
AS tot	−0.06 (0.81)	0.14 (0.55)	0.10 (0.68)	0.16 (0.50)
HARS tot	−0.52 (0.02)	−0.11 (0.64)	−0.16 (0.49)	0.06 (0.79)
BDI tot	−0.13 (0.58)	0.03 (0.90)	−0.04 (0.85)	−0.11(0.64)
PPRS tot	0.37 (0.10)	0.04 (0.88)	−0.06 (0.80)	0.25 (0.30)

Legend: AS, Apathy Scale; BDI, Beck Depression Inventory; HARS, Hamilton Anxiety Rating Scale; M-WCST-sf, P Modified Wisconsin Card Sorting Test short form perseverative errors; PPRS, Parkinson’s Psychosis Rating Scale; r to z, Fisher’s r to z transformation; SWCT-sv IE-E, Stroop Word-Color Test short form, error interference effect; SWCT-sv IE-T, Stroop Word-Color Test short form, time interference effect. Daily levodopa equivalent doses are expressed as mg/day. Bold values indicate statistically significant differences.