| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2948 |
91.4%
|
| 2 | 1 or 2 times | 175 |
5.4%
|
| 3 | 3 to 9 times | 57 |
1.8%
|
| 4 | 10 or more times | 44 |
1.4%
|
| Sysmiss | 162 |