| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 6 |
6.8%
|
| 0 | 9 |
10.2%
|
|
| 1 | 10 |
11.4%
|
|
| 2 | 21 |
23.9%
|
|
| 3 | 15 |
17%
|
|
| 4 | 3 |
3.4%
|
|
| 5 | 4 |
4.5%
|
|
| 6 | 4 |
4.5%
|
|
| 7 | 2 |
2.3%
|
|
| 8 | 3 |
3.4%
|
|
| 10 | 4 |
4.5%
|
|
| 13 | 1 |
1.1%
|
|
| 15 | 2 |
2.3%
|
|
| 20 | 1 |
1.1%
|
|
| 30 | 1 |
1.1%
|
|
| 45 | 1 |
1.1%
|
|
| 70 | 1 |
1.1%
|
|
| Sysmiss | 272 |