| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1609 |
92.2%
|
| 2 | 1 or 2 times | 62 |
3.6%
|
| 3 | 3 to 9 times | 34 |
1.9%
|
| 4 | 10 or more times | 40 |
2.3%
|
| Sysmiss | 32 |