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Distribution of perception of tremor in each of three cohorts.
| Variable | PPMI (n = 422) | BioFIND (n = 118) | PDBP (n = 826) |
|---|---|---|---|
| No tremor | 59 (14.0%) | 24 (20.3%) | 183 (22.1%) |
| Subtle tremor | 282 (66.8%) | 59 (50.0%) | 380 (46.0%) |
| Mild tremor | 73 (17.3%) | 30 (25.4) | 189 (22.9%) |
| Moderate tremor | 7 (1.7%) | 4 (3.4%) | 62 (7.5%) |
| Severe | 1 (0.2%) | 1 (0.8%) | 12 (1.5%) |
Legend: Movement Disorders Society Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) item 2.10.
