| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 0 |
0%
|
| -8 | dont know | 0 |
0%
|
| -7 | na | 0 |
0%
|
| 0 | no | 794 |
99.6%
|
| 1 | yes | 3 |
0.4%
|
| Sysmiss | 1229 |