| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2187 |
75.9%
|
| 2 | 1 or 2 times | 500 |
17.3%
|
| 3 | 3 to 9 times | 123 |
4.3%
|
| 4 | 10 or more times | 72 |
2.5%
|
| Sysmiss | 66 |