| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6 |
25%
|
|
| 20 | 1 |
4.2%
|
|
| 25 | 1 |
4.2%
|
|
| 28 | 1 |
4.2%
|
|
| 30 | 3 |
12.5%
|
|
| 40 | 1 |
4.2%
|
|
| 998 | 98. Don't know | 0 |
0%
|
| 9996 | 96. Not applicable | 0 |
0%
|
| 9997 | 1 |
4.2%
|
|
| 9998 | 98. Don't know | 10 |
41.7%
|
| Sysmiss | 283 |