| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1247 |
57%
|
| 2 | Once | 74 |
3.4%
|
| 3 | Twice | 39 |
1.8%
|
| 4 | 3-5 times | 32 |
1.5%
|
| 5 | 6-10 times | 22 |
1%
|
| 6 | 11-20 times | 6 |
0.3%
|
| 7 | More than 20 times | 23 |
1.1%
|
| 8 | Not applicable | 739 |
33.8%
|
| Sysmiss | 6 |