| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 578 |
48.6%
|
| 1 | Yes | 536 |
45%
|
| 9 | Don't know | 76 |
6.4%
|
| 998 | Refuesd | 0 |
0%
|