| Value | Category | Cases | |
|---|---|---|---|
| -1 | MIssing | 2 |
0.2%
|
| 0 | No | 238 |
19.8%
|
| 1 | Yes | 942 |
78.5%
|
| 9 | Don't know | 18 |
1.5%
|
| 998 | Refused | 0 |
0%
|