| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 14 |
14.6%
|
| 0 | 13 |
13.5%
|
|
| 1 | 11 |
11.5%
|
|
| 2 | 15 |
15.6%
|
|
| 3 | 5 |
5.2%
|
|
| 4 | 2 |
2.1%
|
|
| 5 | 4 |
4.2%
|
|
| 6 | 3 |
3.1%
|
|
| 7 | 4 |
4.2%
|
|
| 8 | 6 |
6.3%
|
|
| 9 | 1 |
1%
|
|
| 10 | 6 |
6.3%
|
|
| 11 | 1 |
1%
|
|
| 13 | 1 |
1%
|
|
| 14 | 1 |
1%
|
|
| 15 | 1 |
1%
|
|
| 16 | 1 |
1%
|
|
| 20 | 1 |
1%
|
|
| 21 | 1 |
1%
|
|
| 22 | 1 |
1%
|
|
| 24 | 1 |
1%
|
|
| 30 | 2 |
2.1%
|
|
| 60 | 1 |
1%
|
|
| Sysmiss | 605 |