| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 50 |
49.5%
|
| 0 | 3 |
3%
|
|
| 1 | 5 |
5%
|
|
| 2 | 2 |
2%
|
|
| 3 | 5 |
5%
|
|
| 4 | 11 |
10.9%
|
|
| 5 | 6 |
5.9%
|
|
| 6 | 2 |
2%
|
|
| 7 | 1 |
1%
|
|
| 8 | 4 |
4%
|
|
| 9 | 1 |
1%
|
|
| 10 | 1 |
1%
|
|
| 12 | 4 |
4%
|
|
| 16 | 1 |
1%
|
|
| 20 | 1 |
1%
|
|
| 21 | 1 |
1%
|
|
| 26 | 1 |
1%
|
|
| 40 | 1 |
1%
|
|
| 50 | 1 |
1%
|
|
| Sysmiss | 124 |