| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -77 | Does not apply | 0 |
0%
|
| -9 | Don't know (spontaneous) | 2 |
2.4%
|
| -7 | Does not apply (spontaneous) | 6 |
7.1%
|
| 0 | 63 |
75%
|
|
| 1 | 3 |
3.6%
|
|
| 2 | 4 |
4.8%
|
|
| 5 | 2 |
2.4%
|
|
| 6 | 1 |
1.2%
|
|
| 8 | 1 |
1.2%
|
|
| 10 | 1 |
1.2%
|
|
| 20 | 1 |
1.2%
|
|
| Sysmiss | 275 |