TABLE 2.

Characteristics of the 116 patients

Age (years)	67.0 (9.9)*
Gender (M/F)	75/41
Manual laterality (n)
Right/Left/Ambidextrous	107/7/2
Age at onset (years)	57.9 (10.7)*
Predominant side of PD (n)
Right/Left/Bilateral	53/54/9
Duration of PD (years)	9.1 (5.8)*
Hoehn and Yahr stage (in “on” state)	2.1 (0.8)*
Daily levodopa-equivalent dose (mg)	758 (429)*
Use of psychoactive drugs (n)**	46 (40%)
Use of clozapine (n)***	4 (3.4%)

^*mean (SD);

^**psychoactive drugs include antidepressants, anxiolytics, and hypnotics;

^***Clozapine was the only antipsychotic drug used in this population.