| |
PD (n = 37)
|
ET (n = 26)
|
P value
|
|---|
|
Age, years
|
63.8 ± 8.7
|
59.1 ± 12.3
|
0.104
|
|
Gender (male/female)
|
26/11
|
14/12
|
0.183
|
|
Duration, years
|
3.6 ± 3.1
|
12.0 ± 10.8
|
0.000
|
|
MMSE
|
27.5 ± 2.2
|
27.9 ± 1.4
|
0.407
|
|
SS-16
|
8.6 ± 2.9
|
12.2 ± 1.6
|
0.000
|
|
UPDRS-III
|
17.8 ± 12.3
|
-
| |
|
H &Y stage
| | | |
|
1–2
|
28
|
-
| |
|
2.5–4
|
9
|
-
| |
|
Olfactory dysfunction
| | |
0.000
|
|
SS-16 < 9.5
|
23
|
1
| |
|
SS-16 > 9.5
|
14
|
25
| |
|
SN hyperechogenicity
| | |
0.006
|
|
Positive
|
18
|
4
| |
|
Negative
|
19
|
22
| |
- PD Parkinson’s disease, ET Essential tremor, SS-16 the 16-item odor identification test from Sniffin’ Sticks, SN Substantia nigra.
