| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.3%
|
|
| 1 | I know nothing about this instrument | 76 |
25.9%
|
| 2 | I know very little about this instrument | 149 |
50.7%
|
| 3 | I know a fair amount about this instrument | 60 |
20.4%
|
| 4 | I know a lot about this instrument | 8 |
2.7%
|
| Sysmiss | 7 |
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