| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2 | 4 |
10%
|
|
| 3 | 3 |
7.5%
|
|
| 4 | 6 |
15%
|
|
| 6 | 2 |
5%
|
|
| 8 | 5 |
12.5%
|
|
| 9 | 1 |
2.5%
|
|
| 10 | 4 |
10%
|
|
| 12 | 10 |
25%
|
|
| 16 | 1 |
2.5%
|
|
| 24 | 4 |
10%
|
|
| Sysmiss | 1056 |