| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2112 |
85.4%
|
| 2 | 1 or 2 times | 283 |
11.4%
|
| 3 | 3 to 9 times | 58 |
2.3%
|
| 4 | 10 or more times | 19 |
0.8%
|
| Sysmiss | 91 |