| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 1 |
0.5%
|
| 1 | Yes | 24 |
10.8%
|
| 2 | No, but expect to receive them in the next 3 months | 62 |
27.9%
|
| 3 | No | 135 |
60.8%
|
| Sysmiss | 138 |