| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | No employees trained | 3 |
2%
|
| 1 | 3 |
2%
|
|
| 9 | 2 |
1.3%
|
|
| NA | 143 |
94.7%
|