| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2226 |
81.7%
|
| 2 | 1 or 2 times | 348 |
12.8%
|
| 3 | 3 to 9 times | 94 |
3.4%
|
| 4 | 10 or more times | 57 |
2.1%
|
| Sysmiss | 42 |