| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2154 |
81.6%
|
| 2 | 1 or 2 times | 322 |
12.2%
|
| 3 | 3 to 9 times | 100 |
3.8%
|
| 4 | 10 or more times | 63 |
2.4%
|
| Sysmiss | 76 |