| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 739 |
33.8%
|
| 2 | Once | 137 |
6.3%
|
| 3 | Twice | 149 |
6.8%
|
| 4 | 3-5 times | 170 |
7.8%
|
| 5 | 6-10 times | 97 |
4.4%
|
| 6 | 11-20 times | 45 |
2.1%
|
| 7 | More than 20 times | 106 |
4.8%
|
| 8 | Not applicable | 739 |
33.8%
|
| Sysmiss | 6 |