| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1560 |
78.1%
|
| 2 | 1 or 2 times | 287 |
14.4%
|
| 3 | 3 to 9 times | 90 |
4.5%
|
| 4 | 10 or more times | 61 |
3.1%
|
| Sysmiss | 107 |