Table 1
Demographic and Clinical Characteristics of ET Patients With and Without Probable RBD.
| RBD | NON-RBD | P VALUE | |
|---|---|---|---|
| Age (y) | 63.90 ± 13.65 | 67.82 ± 14.91 | 0.089 a |
| Age at Onset (y) | 41.18 ± 19.22 | 44.89 ± 20.09 | 0.230 a |
| Disease duration (y) | 22.5 ± 16.22 | 22.61 ± 16.91 | 0.969 a |
| Male | 63.5% | 48.7% | 0.045 b |
[i] Abbreviations: ET = essential tremor; RBD = REM sleep behavior disorder; y = years.
Statistical tests: a = Independent samples t-test, b = Fisher’s exact test.
Table 2
Phenotypic Features of ET Patients With and Without Probable RBD.
| RBD | NON-RBD | P VALUE | |
|---|---|---|---|
| Pure ET | 51.9% | 39.4% | 0.681 a |
| Dystonia | 28.8% | 33.2% | 0.923 a |
| Rest tremor | 11.5% | 18.7% | 0.612 a |
| Parkinsonism | 15.4% | 17.1% | 0.519 a |
| Family History | 57.7% | 53.7% | 0.557 a |
| Ataxia | 1.9% | 8.8% | 0.110 a |
| Cognitive impairment | 3.9% | 4.1% | 0.982 a |
[i] Abbreviations: ET = essential tremor; RBD = REM sleep behavior disorder.
Statistical tests: a = chi-squared test; Fisher’s exact test was used when chi-squared assumptions were not fulfilled.