| Value | Category | Cases | |
|---|---|---|---|
| 1 | Technical | 20 |
5.1%
|
| 2 | Professional | 29 |
7.4%
|
| 3 | On-the-job | 3 |
0.8%
|
| 4 | No | 338 |
86.2%
|
| 8 | 2 |
0.5%
|
|
| Sysmiss | 1 |