| Value | Category | Cases | |
|---|---|---|---|
| -8 | Don't know | 0 |
0%
|
| -7 | Prefer not to disclose | 0 |
0%
|
| 1 | Received | 33 |
71.7%
|
| 2 | Not Received | 13 |
28.3%
|
| Sysmiss | 2592 |