| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 6 |
2%
|
| 2 | no | 298 |
98%
|
| 777 | n\a | 0 |
0%
|
| 888 | dk | 0 |
0%
|
| 999 | missing | 0 |
0%
|
| Sysmiss | 1638 |