| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 2 |
0.1%
|
| -8 | dont know | 0 |
0%
|
| -7 | na | 0 |
0%
|
| 1 | yes | 496 |
24.5%
|
| 2 | no | 1525 |
75.4%
|
| Sysmiss | 3 |