| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 972 |
80.3%
|
| 2 | 1 or 2 times | 161 |
13.3%
|
| 3 | 3 to 9 times | 40 |
3.3%
|
| 4 | 10 or more times | 38 |
3.1%
|
| Sysmiss | 63 |