| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 2430 |
98.5%
|
| 2 | during last 3 months | 12 |
0.5%
|
| 3 | during last 6 months | 3 |
0.1%
|
| 4 | during last year | 7 |
0.3%
|
| 5 | more than one year ago | 16 |
0.6%
|
| Sysmiss | 15 |