| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1393 |
97.5%
|
| 1 | 1. it has happened but more than a year ago | 21 |
1.5%
|
| 2 | 2. at least once this year | 8 |
0.6%
|
| 3 | 3. monthly | 3 |
0.2%
|
| 4 | 4. weekly | 4 |
0.3%
|
| Sysmiss | 134 |