TABLE 1:
Demographic and clinical data
Group
Mean Age, y
Symptom Duration, y
Hoehn-Yahr Stage
PD (
n
= 27)
67.63 ± 3.66
5.25 ± 3.48
2.30 ± 0.72
*
PSP (
n
= 25)
68.88 ± 6.48
5.30 ± 3.28
2.78 ± 0.64
*
*
P
< .001, unpaired
t
test.