| Value | Category | Cases | |
|---|---|---|---|
| -5 | missing; unknown | 0 |
0%
|
| -4 | not asked in survey | 0 |
0%
|
| -3 | not applicable | 0 |
0%
|
| -2 | no answer | 0 |
0%
|
| -1 | don´t know | 0 |
0%
|
| 1 | have done | 902 |
5.2%
|
| 2 | not done | 16578 |
94.8%
|
| Sysmiss | 240117 |