| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 3 |
1.1%
|
| 1 | Yes | 5 |
1.8%
|
| 2 | No, but expect to receive them in the next 3 months | 7 |
2.5%
|
| 3 | No | 268 |
94.7%
|
| Sysmiss | 77 |