| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 22 |
0.3%
|
| -8 | Refused | 41 |
0.6%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 0 |
0%
|
| 1 | Yes | 615 |
8.7%
|
| 2 | No | 6395 |
90.4%
|