| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1680 |
89.4%
|
| 2 | 1 or 2 times | 142 |
7.6%
|
| 3 | 3 to 9 times | 28 |
1.5%
|
| 4 | 10 or more times | 30 |
1.6%
|
| Sysmiss | 35 |