TABLE 1.

Demographic and clinical characteristics (N =191)

Variable	Mean (SD) or Percentage
Demographics
Age, years	63.1 (10.0)
Sex, % male	71.7
Race, % white	94.8
Education, years	16.4 (3.0)
Parkinson’s Disease
PD duration, years	6.4 (5.4)
Hoehn and Yahr, mediana	2.0
UPDRS motor scorea	21.6 (10.3)
Deep brain stimulation, % yes	11.5
Medications
Levodopa LEDD, mg/day	501.2 (419.5)
Dopamine agonist, % yes	49.7
Anticholingeric, % yes	3.7
Amantadine, % yes	19.4
MAO inhibitor, % yesa	13.7
Psychosis
Any psychotic symptom, % yes	21.5
Visual hallucinations, % yes	13.6
Auditory hallucinations, % yes	6.8
Illusions or misidentification, % yes	7.3
Paranoid ideation, % yes	4.7
Psychiatric
Inventory for Depressive Symptomatology scorea	18.5 (12.6)
State Anxiety Inventory scoreb	39.2 (14.5)
REM Behavior Disorder scorec	1.0 (1.2)
Epworth Sleepiness Scale scored	9.9 (4.8)
Apathy Scale scoree	11.7 (6.4)
Cognition
Mini-Mental State Examination score	29.2 (0.80)

^aN = 190;

^bN = 186;

^cN = 182;

^dN = 179;

^eN = 178.

Abbreviations: MAO, monoamine oxidase.