| Value | Category | Cases | |
|---|---|---|---|
| -4 | Not asked | 0 |
0%
|
| -2 | NA | 0 |
0%
|
| -1 | DK | 0 |
0%
|
| 1 | Have done | 265 |
23.2%
|
| 2 | Have not | 878 |
76.8%
|