| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 6 |
3.1%
|
| 1 | 7 |
3.6%
|
|
| 2 | 5 |
2.6%
|
|
| 3 | 7 |
3.6%
|
|
| 4 | 61 |
31.6%
|
|
| 5 | 10 |
5.2%
|
|
| 6 | 11 |
5.7%
|
|
| 7 | 1 |
0.5%
|
|
| 8 | 36 |
18.7%
|
|
| 10 | 1 |
0.5%
|
|
| 12 | 25 |
13%
|
|
| 14 | 2 |
1%
|
|
| 16 | 3 |
1.6%
|
|
| 20 | 1 |
0.5%
|
|
| 24 | 14 |
7.3%
|
|
| 32 | 2 |
1%
|
|
| 72 | 1 |
0.5%
|
|
| Sysmiss | 49 |