| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 6240 |
75.7%
|
| 1 | (1-2) times | 975 |
11.8%
|
| 2 | (3-10) times | 672 |
8.2%
|
| 3 | More than 10 times | 349 |
4.2%
|
| 9 | I don’t know/ no answer | 4 | |
| Sysmiss | 4 |