| Value | Category | Cases | |
|---|---|---|---|
| 1 | once | 35 |
2.3%
|
| 2 | twice | 11 |
0.7%
|
| 3 | 3-5 times | 16 |
1.1%
|
| 4 | 6-10 times | 2 |
0.1%
|
| 5 | 11-20 times | 3 |
0.2%
|
| 6 | more than 20 times | 6 |
0.4%
|
| 7 | not in past year, but happened before | 54 |
3.6%
|
| 8 | never happened | 1382 |
91.6%
|
| Sysmiss | 988 |