| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 1953 |
78.8%
|
| 2 | during last 3 months | 166 |
6.7%
|
| 3 | during last 6 months | 53 |
2.1%
|
| 4 | during last year | 74 |
3%
|
| 5 | more than one year ago | 234 |
9.4%
|
| Sysmiss | 17 |