| Value | Category | Cases | |
|---|---|---|---|
| 1 | once | 23 |
1.5%
|
| 2 | twice | 9 |
0.6%
|
| 3 | 3-5 times | 18 |
1.2%
|
| 4 | 6-10 times | 8 |
0.5%
|
| 5 | 11-20 times | 7 |
0.5%
|
| 6 | more than 20 times | 13 |
0.9%
|
| 7 | not in past year, but happened before | 55 |
3.7%
|
| 8 | never happened | 1372 |
91.2%
|
| Sysmiss | 992 |