| USPD signal | Specificty | |||||
|---|---|---|---|---|---|---|
| Wrist | MCP’s | Wrist + MCP’s | Wrist + 2nd & 3rd MCP’s | 2nd MCP | 3rd MCP | |
| Any grade | 0,91 | 0,99 | 0,90 | 0,90 | 0,99 | 1 |
| (0,87–0,96) | (0,97– 1) | (0,86–0,95) | (0,85–0,95) | (0,96–1) | ||
| Grade I | 0,93 | 0,99 | 0,92 | 0,92 | 0,99 | 1 |
| (0,89–0,97 | (0,97–1) | (0,87–0,96) | (0,86–0,95) | (0,96–1) | ||
| Grade II | 0,98 | 1 | 0,98 | 0,98 | 1 | 1 |
| (0,84–1) | 1 | (0,96–1) | (0,96–1) | 1 | ||
| Grade III | 1,00 | 1 | 1,00 | 1 | 1 | 1 |