| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2116 |
87.4%
|
| 2 | 1 or 2 times | 197 |
8.1%
|
| 3 | 3 to 9 times | 68 |
2.8%
|
| 4 | 10 or more times | 40 |
1.7%
|
| Sysmiss | 68 |