| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 1 |
0.2%
|
| 1 | Yes | 28 |
5.3%
|
| 2 | No, but expect to receive them in the next 3 months | 0 |
0%
|
| 3 | No | 501 |
94.5%
|
| Sysmiss | 70 |