| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2550 |
79.8%
|
| 2 | 1 or 2 times | 538 |
16.8%
|
| 3 | 3 to 9 times | 72 |
2.3%
|
| 4 | 10 or more times | 36 |
1.1%
|
| Sysmiss | 135 |