| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 4075 |
90.4%
|
| 2 | Once | 49 |
1.1%
|
| 3 | Twice | 67 |
1.5%
|
| 4 | 3-5 times | 76 |
1.7%
|
| 5 | 6-10 times | 47 |
1%
|
| 6 | 11-20 times | 29 |
0.6%
|
| 7 | More than 20 times | 111 |
2.5%
|
| 8 | Not applicable | 13 |
0.3%
|
| Sysmiss | 39 |