| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1723 |
78.7%
|
| 2 | Once | 109 |
5%
|
| 3 | Twice | 70 |
3.2%
|
| 4 | 3-5 times | 62 |
2.8%
|
| 5 | 6-10 times | 38 |
1.7%
|
| 6 | 11-20 times | 26 |
1.2%
|
| 7 | More than 20 times | 58 |
2.7%
|
| 8 | Not applicable | 101 |
4.6%
|
| Sysmiss | 1 |