| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 2080 |
86.9%
|
| 2 | 1 or 2 times | 201 |
8.4%
|
| 3 | 3 to 9 times | 63 |
2.6%
|
| 4 | 10 or more times | 49 |
2%
|
| Sysmiss | 92 |