| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 2353 |
95.5%
|
| 2 | during last 3 months | 18 |
0.7%
|
| 3 | during last 6 months | 15 |
0.6%
|
| 4 | during last year | 11 |
0.4%
|
| 5 | more than one year ago | 67 |
2.7%
|
| Sysmiss | 19 |