| Value | Category | Cases | |
|---|---|---|---|
| 0 | nr | 0 |
0%
|
| 1 | yes | 648 |
31.6%
|
| 2 | no | 1016 |
49.5%
|
| 3 | sometimes | 381 |
18.6%
|
| 4 | 5 |
0.2%
|
|
| 6 | 1 |
0%
|
|
| 9 | na | 0 |
0%
|
| Sysmiss | 949 |