| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 7740 |
93.9%
|
| 1 | (1-2) times | 303 |
3.7%
|
| 2 | (3-10) times | 119 |
1.4%
|
| 3 | More than 10 times | 74 |
0.9%
|
| 9 | I don’t know/ no answer | 4 | |
| Sysmiss | 4 |