| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | No | 1992 |
83%
|
| 1 | Yes | 399 |
16.6%
|
| 9 | Don't know | 9 |
0.4%
|
| 998 | Refused | 0 |
0%
|