| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 6143 |
97.9%
|
| 2 | 1 or 2 times | 74 |
1.2%
|
| 3 | 3 to 9 times | 36 |
0.6%
|
| 4 | 10 or more times | 21 |
0.3%
|
| Sysmiss | 255 |