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Characteristics of the study population.
| Characteristics | Number |
|---|---|
| Patients | 90 |
| Sex | |
| Males | 67 (74.4%) |
| Females | 23 (25.6%) |
| Age (years) | |
| Mean ± SD | 64.7 ± 12.1 |
| Range | 23–86 |
| Tremor etiology | |
| Essential tremor | 70 (77.8%) |
| Parkinson tremor | 15 (16.7%) |
| Multiple sclerosis | 3 (3.3%) |
| Neuropathic pain | 2 (2.2%) |
| SDR | |
| Mean ± SD | 0.49 ± 0.09 |
| Range | 0.27–0.74 |
SDR skull-density ratio, SD standard deviations.
