| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0.6%
|
|
| 1 | 1 |
0.6%
|
|
| 8 | 3 |
1.7%
|
|
| 9 | 2 |
1.1%
|
|
| 10 | 9 |
5%
|
|
| 11 | 87 |
48.6%
|
|
| 12 | 65 |
36.3%
|
|
| 99 | Not remember | 11 |
6.1%
|
| Sysmiss | 2169 |