| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2879 |
77.3%
|
| 2 | 1 or 2 times | 549 |
14.7%
|
| 3 | 3 to 9 times | 174 |
4.7%
|
| 4 | 10 or more times | 121 |
3.3%
|
| Sysmiss | 146 |