| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 1 |
0.4%
|
| 1 | Yes | 71 |
25%
|
| 2 | No, but expect to receive them in the next 3 months | 31 |
10.9%
|
| 3 | No | 181 |
63.7%
|
| Sysmiss | 76 |