Table 4.
Clinical features of essential tremor and Parkinson’s disease cases grouped by yellow and orange clusters
| Variables | ET cases
|
p value | |
|---|---|---|---|
| Yellow cluster | Orange cluster | ||
| n | 11 | 6 | |
| Age at death (years) | 84.0 ± 6.9 | 86.7 ± 5.5 | 0.43a |
| Sex | 0.30b | ||
| Men | 6 (54.5 %) | 1 (16.7 %) | |
| Women | 5 (45.5 %) | 5 (83.3 %) | |
| Rest tremor | 0.16b | ||
| No | 8 (72.7 %) | 2 (33.3 %) | |
| Yes | 3 (27.3 %) | 4 (66.7 %) | |
| Action/postural tremor | |||
| No | 0 (0 %) | 0 (0 %) | |
| Yes | 11 (100 %) | 6 (100 %) | |
|
| |||
| PD cases
|
p value | ||
| Yellow cluster | Orange cluster | ||
|
| |||
| n | 4 | 3 | |
| Age at death (years) | 74.0 ± 5.4 | 79.33 ± 2.1 | 0.14a |
| Sex | 1.00b | ||
| Men | 3 (75.0 %) | 3 (100.0 %) | |
| Women | 1 (25.0 %) | 0 (0.0 %) | |
| Rest tremor | 0.14b | ||
| No | 3 (75.0 %) | 0 (0.0 %) | |
| Yes | 1 (25.0 %) | 3 (100.0 %) | |
| Action/postural tremor | 1.00b | ||
| No | 2 (50.0 %) | 1 (33.3 %) | |
| Yes | 2 (50.0 %) | 2 (66.7 %) | |
|
| |||
| Combined group (ET and PD cases) |
p value | ||
| Yellow cluster | Orange cluster | ||
|
| |||
| n | 15 | 9 | |
| Age at death (years) | 81.3 ± 7.8 | 84.2 ± 5.8 | 0.31a |
| Sex | 0.68b | ||
| Men | 9 (60.0 %) | 4 (44.4 %) | |
| Women | 6 (40.0 %) | 5 (55.6 %) | |
| Rest tremor | 0.03b | ||
| No | 11 (73.3 %) | 2 (22.2 %) | |
| Yes | 4 (26.7 %) | 7 (77.8 %) | |
| Action/postural tremor | 1.00b | ||
| No | 2 (50.0 %) | 1 (33.3 %) | |
| Yes | 13 (50.0 %) | 7 (66.7 %) | |
Values represent mean ± standard deviation or number
ET essential tremor, PD Parkinson’s disease
a
Two independent samples t test
b
Chi-square test