| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 30 |
55.6%
|
|
| 1 | 2 |
3.7%
|
|
| 2 | 6 |
11.1%
|
|
| 3 | 2 |
3.7%
|
|
| 4 | 1 |
1.9%
|
|
| 5 | 3 |
5.6%
|
|
| 6 | 2 |
3.7%
|
|
| 7 | 1 |
1.9%
|
|
| 8 | 1 |
1.9%
|
|
| 10 | 2 |
3.7%
|
|
| 14 | 1 |
1.9%
|
|
| 20 | 1 |
1.9%
|
|
| 28 | 1 |
1.9%
|
|
| 30 | 1 |
1.9%
|
|
| Sysmiss | 99 |