| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 not used at all | 417 |
27.6%
|
| 1 | 1 | 77 |
5.1%
|
| 2 | 2 | 134 |
8.9%
|
| 3 | 3 | 129 |
8.5%
|
| 4 | 4 | 81 |
5.4%
|
| 5 | 5 | 132 |
8.7%
|
| 6 | 6 | 52 |
3.4%
|
| 7 | 7 | 34 |
2.2%
|
| 8 | 8 | 37 |
2.4%
|
| 9 | 9 | 9 |
0.6%
|
| 10 | 10 used a lot | 19 |
1.3%
|
| 98 | 98 don't know | 2 |
0.1%
|
| 99 | 99 no answer | 1 |
0.1%
|
| Sysmiss | 389 |
25.7%
|