| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1565 |
71.5%
|
| 2 | Once | 118 |
5.4%
|
| 3 | Twice | 112 |
5.1%
|
| 4 | 3-5 times | 107 |
4.9%
|
| 5 | 6-10 times | 68 |
3.1%
|
| 6 | 11-20 times | 43 |
2%
|
| 7 | More than 20 times | 73 |
3.3%
|
| 8 | Not applicable | 100 |
4.6%
|
| Sysmiss | 2 |