| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing | 0 |
0%
|
| -1 | Refused | 0 |
0%
|
| 1 | Yes | 887 |
99.8%
|
| 2 | No | 2 |
0.2%
|
| Sysmiss | 1948 |