| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 4 |
12.9%
|
| 1 | Yes, more than once in the last six months | 11 |
35.5%
|
| 2 | Yes, once in the last six months | 16 |
51.6%
|
| Sysmiss | 9058 |