| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 1 |
0.5%
|
| -8 | dont know | 2 |
1%
|
| -7 | na | 0 |
0%
|
| 0 | no | 175 |
90.7%
|
| 1 | yes | 15 |
7.8%
|
| Sysmiss | 6 |