| Value | Category | Cases | |
|---|---|---|---|
| 0 | 7 |
87.5%
|
|
| 11 | 1 |
12.5%
|
|
| 77 | refused | 0 |
0%
|
| 88 | don't know | 0 |
0%
|
| 99 | missing | 0 |
0%
|
| Sysmiss | 4962 |