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Number of subjects with valid data from the instrument, the arthroscope, and both the instrument and the arthroscope for the three studied tasks.
| Task | Instrument | Arthroscope | Instrument and Athroscope | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Novices | Experts | Total | Novices | Experts | Total | Novices | Experts | Total | |
| 1 | 16 | 4 | 20 | 15 | 5 | 20 | 14 | 4 | 18 |
| 2 | 18 | 5 | 23 | 17 | 6 | 23 | 15 | 5 | 20 |
| 3 | 16 | 4 | 20 | 12 | 4 | 16 | 12 | 4 | 16 |
