Table 1: Sample demographics ( ).

CharacteristicTotal
(%) or mean (SD)

Mean age, yrs, (SD)72.4 (9.2)
Male, (%)114 (59.1)
White, (%)152 (78.8)
College education, (%)62 (32.1)
Married, (%) ( )145 (76.3)
Employed full/part-time (%)35 (18.1)
Mean duration of PD, yrs, (SD)5.2 (2.3)
Mean Hoehn and Yahr stage, (SD)2.7 (0.8)
Hoehn and Yahr stage, (%)
 Stage 1: Unilateral disease24 (12.8)
 Stage 1.5: Unilateral plus axial involvement10 (5.3)
 Stage 2: Bilateral disease, without impairment of balance72 (38.8)
 Stage 2.5: Mild bilateral disease with recovery on pull test41 (21.8)
 Stage 3: Mild-to-moderate bilateral disease; some postural instability; physically independent.26 (13.8)
 Stage 4: Severe disability; still able to walk or stand unassisted9 (4.8)
 Stage 5: Wheelchair bound or bedridden unless aided5 (2.7)
Medication status, (%)*
 Levodopa only67 (34.9)
 Levodopa and any other medication108 (56.3)
 Dopamine agonists without levodopa17 (8.9)
PD subtype, (%)
 Tremor-dominant33 (17.1)
 Akinetic rigid142 (73.6)
 Mixed18 (9.3)

* One subject excluded because they were on MAO-B inhibitors alone.