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Metric anchors for TETRAS performance measures of head and extremity tremor
| Head tremor | Upper limb tremor | Lower limb tremor |
|---|---|---|
| 0 = no tremor | 0 = no tremor | 0 = no tremor |
| 1 = < 0.5 cm | 1 = barely visible | 1 = barely visible |
| 2 = 0.5– < 2.5 cm | 1.5 = < 1 cm | 2 = <1 |
| 3 = 2.5–5 cm | 2 = 1– < 3 cm | 3 = 1 – 5 |
| 4 = > 5 cm | 2.5 = 3– < 5 cm | 4 = > 5 cm |
| 3 = 5– < 10 cm | ||
| 3.5 = 10– < 20 cm | ||
| 4 = > 20 cm |
