| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Yes | 12 |
13.3%
|
| 2 | No, but expect to receive them in the next 3 months | 1 |
1.1%
|
| 3 | No | 77 |
85.6%
|
| Sysmiss | 715 |