| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2140 |
95.7%
|
| 2 | 1 or 2 times | 59 |
2.6%
|
| 3 | 3 to 9 times | 20 |
0.9%
|
| 4 | 10 or more times | 18 |
0.8%
|
| Sysmiss | 49 |