| Value | Category | Cases | |
|---|---|---|---|
| -99 | Refused to respond | 2 |
0.6%
|
| -98 | Don't know | 17 |
4.8%
|
| 0 | No | 198 |
55.5%
|
| 1 | Yes | 140 |
39.2%
|
| 11 | .Z | 587 | |
| Sysmiss | 1 |