| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 2041 |
84.6%
|
| 2 | 1 or 2 times | 217 |
9%
|
| 3 | 3 to 9 times | 64 |
2.7%
|
| 4 | 10 or more times | 90 |
3.7%
|
| Sysmiss | 73 |