| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 68 |
25.7%
|
| 0 | 44 |
16.6%
|
|
| 1 | 14 |
5.3%
|
|
| 2 | 16 |
6%
|
|
| 3 | 7 |
2.6%
|
|
| 4 | 39 |
14.7%
|
|
| 5 | 10 |
3.8%
|
|
| 6 | 9 |
3.4%
|
|
| 7 | 3 |
1.1%
|
|
| 8 | 27 |
10.2%
|
|
| 9 | 1 |
0.4%
|
|
| 10 | 7 |
2.6%
|
|
| 12 | 12 |
4.5%
|
|
| 15 | 1 |
0.4%
|
|
| 16 | 3 |
1.1%
|
|
| 18 | 1 |
0.4%
|
|
| 24 | 1 |
0.4%
|
|
| 26 | 1 |
0.4%
|
|
| 60 | 1 |
0.4%
|
|
| Sysmiss | 94 |