| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 1 |
0.5%
|
| -8 | dont know | 0 |
0%
|
| -7 | na | 0 |
0%
|
| 1 | yes | 167 |
83.9%
|
| 2 | no | 31 |
15.6%
|