| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 5757 |
69.8%
|
| 1 | (1-2) times | 1263 |
15.3%
|
| 2 | (3-10) times | 789 |
9.6%
|
| 3 | More than 10 times | 427 |
5.2%
|
| 9 | I don’t know/ no answer | 4 | |
| Sysmiss | 4 |