| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 2434 |
98.9%
|
| 2 | during last 3 months | 3 |
0.1%
|
| 3 | during last 6 months | 2 |
0.1%
|
| 4 | during last year | 4 |
0.2%
|
| 5 | more than one year ago | 17 |
0.7%
|
| Sysmiss | 37 |