| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -77 | Does not apply | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | 83 |
92.2%
|
|
| 2 | 2 |
2.2%
|
|
| 4 | 1 |
1.1%
|
|
| 6 | 1 |
1.1%
|
|
| 10 | 1 |
1.1%
|
|
| 30 | 1 |
1.1%
|
|
| 310 | 1 |
1.1%
|
|
| Sysmiss | 715 |