| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1474 |
74.1%
|
| 2 | Once | 60 |
3%
|
| 3 | Twice | 101 |
5.1%
|
| 4 | 3-5 times | 96 |
4.8%
|
| 5 | 6-10 times | 79 |
4%
|
| 6 | 11-20 times | 55 |
2.8%
|
| 7 | More than 20 times | 119 |
6%
|
| Sysmiss | 4 |