| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2257 |
73.2%
|
| 2 | 1 or 2 times | 564 |
18.3%
|
| 3 | 3 to 9 times | 175 |
5.7%
|
| 4 | 10 or more times | 88 |
2.9%
|
| Sysmiss | 78 |