| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 886 |
77.4%
|
| 2 | 1 or 2 times | 189 |
16.5%
|
| 3 | 3 to 9 times | 48 |
4.2%
|
| 4 | 10 or more times | 21 |
1.8%
|
| Sysmiss | 51 |