| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1476 |
74.2%
|
| 2 | Once | 95 |
4.8%
|
| 3 | Twice | 115 |
5.8%
|
| 4 | 3-5 times | 128 |
6.4%
|
| 5 | 6-10 times | 49 |
2.5%
|
| 6 | 11-20 times | 43 |
2.2%
|
| 7 | More than 20 times | 79 |
4%
|
| Sysmiss | 3 |