| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1608 |
71.1%
|
| 2 | 1 or 2 times | 425 |
18.8%
|
| 3 | 3 to 9 times | 122 |
5.4%
|
| 4 | 10 or more times | 106 |
4.7%
|
| Sysmiss | 131 |