| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 9 |
0.8%
|
| 0 | No | 88 |
7.3%
|
| 1 | Yes | 171 |
14.3%
|
| 7 | Not applicable | 931 |
77.6%
|
| 9 | Don't know | 1 |
0.1%
|
| 998 | Refused | 0 |
0%
|