| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1223 |
55.9%
|
| 2 | Once | 23 |
1.1%
|
| 3 | Twice | 18 |
0.8%
|
| 4 | 3-5 times | 33 |
1.5%
|
| 5 | 6-10 times | 15 |
0.7%
|
| 6 | 11-20 times | 2 |
0.1%
|
| 7 | More than 20 times | 21 |
1%
|
| 8 | Not applicable | 846 |
38.7%
|
| Sysmiss | 7 |