| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 192 |
22.1%
|
| 1 | Yes, more than once in the last six months | 423 |
48.7%
|
| 2 | Yes, once in the last six months | 253 |
29.1%
|
| Sysmiss | 6979 |