| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2917 |
90.3%
|
| 2 | 1 or 2 times | 201 |
6.2%
|
| 3 | 3 to 9 times | 67 |
2.1%
|
| 4 | 10 or more times | 44 |
1.4%
|
| Sysmiss | 475 |