| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1639 |
72.3%
|
| 2 | 1 or 2 times | 463 |
20.4%
|
| 3 | 3 to 9 times | 100 |
4.4%
|
| 4 | 10 or more times | 65 |
2.9%
|
| Sysmiss | 29 |