| Value | Category | Cases | |
|---|---|---|---|
| 0 | 9 |
45%
|
|
| 1 | 1 |
5%
|
|
| 2 | 1 |
5%
|
|
| 3 | 1 |
5%
|
|
| 30 | 1 |
5%
|
|
| 96 | Still on going | 2 |
10%
|
| 97 | Refuse to answer | 0 |
0%
|
| 99 | Missing | 5 |
25%
|
| Sysmiss | 1705 |