| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't Know | 0 |
0%
|
| -8 | Refused | 0 |
0%
|
| -5 | Not Applicable | 0 |
0%
|
| -3 | Missing | 30 |
100%
|
| Sysmiss | 1968 |