| Value | Category | Cases | |
|---|---|---|---|
| 4 | 1 |
12.5%
|
|
| 8 | 1 |
12.5%
|
|
| 10 | 1 |
12.5%
|
|
| 11 | 1 |
12.5%
|
|
| 12 | 4 |
50%
|
|
| 77 | refuse | 0 |
0%
|
| 88 | don't know | 0 |
0%
|
| 99 | missing | 0 |
0%
|
| Sysmiss | 4962 |