| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 6324 |
76.7%
|
| 1 | (1-2) times | 901 |
10.9%
|
| 2 | (3-10) times | 649 |
7.9%
|
| 3 | More than 10 times | 361 |
4.4%
|
| 9 | I don’t know/ no answer | 5 | |
| Sysmiss | 4 |