| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1100 |
50.3%
|
| 2 | Once | 85 |
3.9%
|
| 3 | Twice | 74 |
3.4%
|
| 4 | 3-5 times | 61 |
2.8%
|
| 5 | 6-10 times | 50 |
2.3%
|
| 6 | 11-20 times | 22 |
1%
|
| 7 | More than 20 times | 51 |
2.3%
|
| 8 | Not applicable | 739 |
33.8%
|
| Sysmiss | 6 |