| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1800 |
84.8%
|
| 2 | 1 or 2 times | 260 |
12.2%
|
| 3 | 3 to 9 times | 30 |
1.4%
|
| 4 | 10 or more times | 33 |
1.6%
|
| Sysmiss | 43 |