| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 38 |
4.5%
|
| -66 | -66 (refuse to answer) | 2 |
0.2%
|
| 0 | No | 643 |
75.4%
|
| 1 | Yes | 170 |
19.9%
|
| Sysmiss | 526 |