| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2414 |
78.4%
|
| 2 | 1 or 2 times | 516 |
16.8%
|
| 3 | 3 to 9 times | 94 |
3.1%
|
| 4 | 10 or more times | 54 |
1.8%
|
| Sysmiss | 71 |