Demographic and clinical characteristics of 116 ET cases
| Characteristics | Data |
|---|---|
| Age (years)* | 71.5±12.5 (range 28–96) |
| Female gender | 59 (50.9) |
| Right handed | 100 (86.2) |
| Education (years) | 16.0±2.5 |
| White race | 110 (94.8) |
| Total tremor score* | 20.1±6.2 (range 8–34) |
| Head (neck) tremor in examination* | 41 (35.3) |
| Voice tremor on examination* | 28 (24.1) |
| Tremor duration (years)* | 31.0±17.8 (range 3–76) |
| Age of tremor onset (years)* | 40.7±18.8 (range 1–82) |
| Family history of ET* | 31 (26.7) |
| Total spiral score† | |
| Baseline | 3.41±1.70 |
| Follow-up | 4.05±1.78 |
| Right spiral score† | |
| Baseline | 3.22±1.86 (3.26±1.86 in 100 right-handed cases) |
| Follow-up | 3.76±1.89 (3.82±1.91 in 100 right-handed cases) |
| Left spiral score† | |
| Baseline | 3.59±1.79 (3.13±1.95 in 16 left-handed cases) |
| Follow-up | 4.35±1.91 (4.31±2.11 in 16 left-handed cases) |
Values represent mean±SD (range) or number (percentage).
*Baseline value.
†Baseline versus follow-up value differed in the full sample of 116 cases (paired t test, p<0.001).
ET, essential tremor.