| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 960 |
43.9%
|
| 2 | Once | 69 |
3.2%
|
| 3 | Twice | 78 |
3.6%
|
| 4 | 3-5 times | 75 |
3.4%
|
| 5 | 6-10 times | 49 |
2.2%
|
| 6 | 11-20 times | 36 |
1.6%
|
| 7 | More than 20 times | 60 |
2.7%
|
| 8 | Not applicable | 855 |
39.1%
|
| Sysmiss | 6 |