| Value | Category | Cases | |
|---|---|---|---|
| -2 | Refusal to answer | 18 |
10.1%
|
| -1 | Don't know | 1 |
0.6%
|
| 0 | 153 |
85.5%
|
|
| 80 | 2 |
1.1%
|
|
| 100 | 1 |
0.6%
|
|
| 160 | 1 |
0.6%
|
|
| 200 | 2 |
1.1%
|
|
| 300 | 1 |
0.6%
|
|
| Sysmiss | 1 |