| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 897 |
41%
|
| 2 | Once | 63 |
2.9%
|
| 3 | Twice | 111 |
5.1%
|
| 4 | 3-5 times | 84 |
3.8%
|
| 5 | 6-10 times | 65 |
3%
|
| 6 | 11-20 times | 41 |
1.9%
|
| 7 | More than 20 times | 68 |
3.1%
|
| 8 | Not applicable | 853 |
39%
|
| Sysmiss | 6 |