| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 2 |
5.3%
|
| 1 | Yes | 7 |
18.4%
|
| 2 | No, but expect to receive them in the next 3 months | 1 |
2.6%
|
| 3 | No | 28 |
73.7%
|
| Sysmiss | 307 |