| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 13 |
3.4%
|
| 0 | 5 |
1.3%
|
|
| 1 | 6 |
1.6%
|
|
| 2 | 23 |
6.1%
|
|
| 3 | 17 |
4.5%
|
|
| 4 | 34 |
9%
|
|
| 5 | 11 |
2.9%
|
|
| 6 | 32 |
8.5%
|
|
| 7 | 12 |
3.2%
|
|
| 8 | 67 |
17.8%
|
|
| 9 | 14 |
3.7%
|
|
| 10 | 42 |
11.1%
|
|
| 11 | 18 |
4.8%
|
|
| 12 | 61 |
16.2%
|
|
| 13 | 9 |
2.4%
|
|
| 14 | 4 |
1.1%
|
|
| 15 | 1 |
0.3%
|
|
| 16 | 3 |
0.8%
|
|
| 18 | 4 |
1.1%
|
|
| 20 | 1 |
0.3%
|
|
| Sysmiss | 324 |