| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1407 |
98.5%
|
| 1 | 1. it has happened but more than a year ago | 14 |
1%
|
| 2 | 2. at least once this year | 6 |
0.4%
|
| 3 | 3. monthly | 1 |
0.1%
|
| 4 | 4. weekly | 1 |
0.1%
|
| Sysmiss | 134 |