| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1278 |
58.4%
|
| 2 | Once | 43 |
2%
|
| 3 | Twice | 31 |
1.4%
|
| 4 | 3-5 times | 34 |
1.6%
|
| 5 | 6-10 times | 20 |
0.9%
|
| 6 | 11-20 times | 10 |
0.5%
|
| 7 | More than 20 times | 28 |
1.3%
|
| 8 | Not applicable | 738 |
33.7%
|
| Sysmiss | 6 |